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Finding the Fourth Proportional to 124,377, 171,640.11 and 67,788.38

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Solution

The fourth proportional to 124,377, 171,640.11 and 67,788.38 is: 93,547.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,377 : 171,640.11 = 67,788.38 : x
  2. Step 2: Convert to fraction form
    124,377/171,640.11 = 67,788.38/x
  3. Step 3: Cross multiply
    124,377x = 171,640.11 × 67,788.38
  4. Step 4: Simplify right side
    124,377x = 11,635,204,141.72
  5. Step 5: Solve for x
    x = 11,635,204,141.72/124,377
  6. Step 6: Final answer
    x = 93,547.88

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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.