Home / 128,600.23-177,464.30-71,237.25

Finding the Fourth Proportional to 128,600.23, 177,464.30 and 71,237.25

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Solution

The fourth proportional to 128,600.23, 177,464.30 and 71,237.25 is: 98,305.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,600.23 : 177,464.30 = 71,237.25 : x
  2. Step 2: Convert to fraction form
    128,600.23/177,464.30 = 71,237.25/x
  3. Step 3: Cross multiply
    128,600.23x = 177,464.30 × 71,237.25
  4. Step 4: Simplify right side
    128,600.23x = 12,642,067,817.85
  5. Step 5: Solve for x
    x = 12,642,067,817.85/128,600.23
  6. Step 6: Final answer
    x = 98,305.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.