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Finding the Fourth Proportional to 125,151.71, 172,708.32 and 67,789.70

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Solution

The fourth proportional to 125,151.71, 172,708.32 and 67,789.70 is: 93,549.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,151.71 : 172,708.32 = 67,789.70 : x
  2. Step 2: Convert to fraction form
    125,151.71/172,708.32 = 67,789.70/x
  3. Step 3: Cross multiply
    125,151.71x = 172,708.32 × 67,789.70
  4. Step 4: Simplify right side
    125,151.71x = 11,707,844,336.76
  5. Step 5: Solve for x
    x = 11,707,844,336.76/125,151.71
  6. Step 6: Final answer
    x = 93,549.22

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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.