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Finding the Fourth Proportional to 124,376.76, 186,565.18 and 45,447.92

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Solution

The fourth proportional to 124,376.76, 186,565.18 and 45,447.92 is: 68,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,376.76 : 186,565.18 = 45,447.92 : x
  2. Step 2: Convert to fraction form
    124,376.76/186,565.18 = 45,447.92/x
  3. Step 3: Cross multiply
    124,376.76x = 186,565.18 × 45,447.92
  4. Step 4: Simplify right side
    124,376.76x = 8,478,999,375.43
  5. Step 5: Solve for x
    x = 8,478,999,375.43/124,376.76
  6. Step 6: Final answer
    x = 68,171.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.