Home / 90,845,950.80-136,268,926.20-81,887,998.80

Finding the Fourth Proportional to 90,845,950.80, 136,268,926.20 and 81,887,998.80

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Solution

The fourth proportional to 90,845,950.80, 136,268,926.20 and 81,887,998.80 is: 122,831,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,845,950.80 : 136,268,926.20 = 81,887,998.80 : x
  2. Step 2: Convert to fraction form
    90,845,950.80/136,268,926.20 = 81,887,998.80/x
  3. Step 3: Cross multiply
    90,845,950.80x = 136,268,926.20 × 81,887,998.80
  4. Step 4: Simplify right side
    90,845,950.80x = 11,158,789,665,142,888
  5. Step 5: Solve for x
    x = 11,158,789,665,142,888/90,845,950.80
  6. Step 6: Final answer
    x = 122,831,998.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.