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Finding the Fourth Proportional to 115,612.56, 159,565.64 and 67,229.46

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Solution

The fourth proportional to 115,612.56, 159,565.64 and 67,229.46 is: 92,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,612.56 : 159,565.64 = 67,229.46 : x
  2. Step 2: Convert to fraction form
    115,612.56/159,565.64 = 67,229.46/x
  3. Step 3: Cross multiply
    115,612.56x = 159,565.64 × 67,229.46
  4. Step 4: Simplify right side
    115,612.56x = 10,727,511,475.61
  5. Step 5: Solve for x
    x = 10,727,511,475.61/115,612.56
  6. Step 6: Final answer
    x = 92,788.46

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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.