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Finding the Fourth Proportional to 129,302.53, 193,891.32 and 45,060.71

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Solution

The fourth proportional to 129,302.53, 193,891.32 and 45,060.71 is: 67,569.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.53 : 193,891.32 = 45,060.71 : x
  2. Step 2: Convert to fraction form
    129,302.53/193,891.32 = 45,060.71/x
  3. Step 3: Cross multiply
    129,302.53x = 193,891.32 × 45,060.71
  4. Step 4: Simplify right side
    129,302.53x = 8,736,879,572.58
  5. Step 5: Solve for x
    x = 8,736,879,572.58/129,302.53
  6. Step 6: Final answer
    x = 67,569.29

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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.