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Finding the Fourth Proportional to 129,332.60, 192,856.72 and 113,602

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Solution

The fourth proportional to 129,332.60, 192,856.72 and 113,602 is: 169,399.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,332.60 : 192,856.72 = 113,602 : x
  2. Step 2: Convert to fraction form
    129,332.60/192,856.72 = 113,602/x
  3. Step 3: Cross multiply
    129,332.60x = 192,856.72 × 113,602
  4. Step 4: Simplify right side
    129,332.60x = 21,908,909,105.44
  5. Step 5: Solve for x
    x = 21,908,909,105.44/129,332.60
  6. Step 6: Final answer
    x = 169,399.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.