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Finding the Fourth Proportional to 124,394.40, 171,663.84 and 67,805.78

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Solution

The fourth proportional to 124,394.40, 171,663.84 and 67,805.78 is: 93,571.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,394.40 : 171,663.84 = 67,805.78 : x
  2. Step 2: Convert to fraction form
    124,394.40/171,663.84 = 67,805.78/x
  3. Step 3: Cross multiply
    124,394.40x = 171,663.84 × 67,805.78
  4. Step 4: Simplify right side
    124,394.40x = 11,639,799,710.68
  5. Step 5: Solve for x
    x = 11,639,799,710.68/124,394.40
  6. Step 6: Final answer
    x = 93,571.73

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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.