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Finding the Fourth Proportional to 129,258.59, 193,887.59 and 61,585.20

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Solution

The fourth proportional to 129,258.59, 193,887.59 and 61,585.20 is: 92,377.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,258.59 : 193,887.59 = 61,585.20 : x
  2. Step 2: Convert to fraction form
    129,258.59/193,887.59 = 61,585.20/x
  3. Step 3: Cross multiply
    129,258.59x = 193,887.59 × 61,585.20
  4. Step 4: Simplify right side
    129,258.59x = 11,940,605,699.74
  5. Step 5: Solve for x
    x = 11,940,605,699.74/129,258.59
  6. Step 6: Final answer
    x = 92,377.66

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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.