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Finding the Fourth Proportional to 129,951.50, 179,333.61 and 70,335.50

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Solution

The fourth proportional to 129,951.50, 179,333.61 and 70,335.50 is: 97,063.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.50 : 179,333.61 = 70,335.50 : x
  2. Step 2: Convert to fraction form
    129,951.50/179,333.61 = 70,335.50/x
  3. Step 3: Cross multiply
    129,951.50x = 179,333.61 × 70,335.50
  4. Step 4: Simplify right side
    129,951.50x = 12,613,519,126.16
  5. Step 5: Solve for x
    x = 12,613,519,126.16/129,951.50
  6. Step 6: Final answer
    x = 97,063.28

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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.