Home / 90,807,573.15-136,570,082.40-81,480,783.60

Finding the Fourth Proportional to 90,807,573.15, 136,570,082.40 and 81,480,783.60

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Solution

The fourth proportional to 90,807,573.15, 136,570,082.40 and 81,480,783.60 is: 122,543,053.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,807,573.15 : 136,570,082.40 = 81,480,783.60 : x
  2. Step 2: Convert to fraction form
    90,807,573.15/136,570,082.40 = 81,480,783.60/x
  3. Step 3: Cross multiply
    90,807,573.15x = 136,570,082.40 × 81,480,783.60
  4. Step 4: Simplify right side
    90,807,573.15x = 11,127,837,330,268,568
  5. Step 5: Solve for x
    x = 11,127,837,330,268,568/90,807,573.15
  6. Step 6: Final answer
    x = 122,543,053.89

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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.