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Finding the Fourth Proportional to 125,120.61, 172,666.59 and 67,760.02

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Solution

The fourth proportional to 125,120.61, 172,666.59 and 67,760.02 is: 93,508.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,120.61 : 172,666.59 = 67,760.02 : x
  2. Step 2: Convert to fraction form
    125,120.61/172,666.59 = 67,760.02/x
  3. Step 3: Cross multiply
    125,120.61x = 172,666.59 × 67,760.02
  4. Step 4: Simplify right side
    125,120.61x = 11,699,891,414.17
  5. Step 5: Solve for x
    x = 11,699,891,414.17/125,120.61
  6. Step 6: Final answer
    x = 93,508.91

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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.