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Finding the Fourth Proportional to 124,387, 171,654.18 and 67,798.60

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Solution

The fourth proportional to 124,387, 171,654.18 and 67,798.60 is: 93,562.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,387 : 171,654.18 = 67,798.60 : x
  2. Step 2: Convert to fraction form
    124,387/171,654.18 = 67,798.60/x
  3. Step 3: Cross multiply
    124,387x = 171,654.18 × 67,798.60
  4. Step 4: Simplify right side
    124,387x = 11,637,913,088.15
  5. Step 5: Solve for x
    x = 11,637,913,088.15/124,387
  6. Step 6: Final answer
    x = 93,562.13

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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.