Home / 125,115.28-172,661.88-71,399.24

Finding the Fourth Proportional to 125,115.28, 172,661.88 and 71,399.24

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Solution

The fourth proportional to 125,115.28, 172,661.88 and 71,399.24 is: 98,532.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,115.28 : 172,661.88 = 71,399.24 : x
  2. Step 2: Convert to fraction form
    125,115.28/172,661.88 = 71,399.24/x
  3. Step 3: Cross multiply
    125,115.28x = 172,661.88 × 71,399.24
  4. Step 4: Simplify right side
    125,115.28x = 12,327,927,008.97
  5. Step 5: Solve for x
    x = 12,327,927,008.97/125,115.28
  6. Step 6: Final answer
    x = 98,532.55

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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.