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Finding the Fourth Proportional to 129,010.80, 193,516.03 and 84,627.02

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Solution

The fourth proportional to 129,010.80, 193,516.03 and 84,627.02 is: 126,940.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,010.80 : 193,516.03 = 84,627.02 : x
  2. Step 2: Convert to fraction form
    129,010.80/193,516.03 = 84,627.02/x
  3. Step 3: Cross multiply
    129,010.80x = 193,516.03 × 84,627.02
  4. Step 4: Simplify right side
    129,010.80x = 16,376,685,213.35
  5. Step 5: Solve for x
    x = 16,376,685,213.35/129,010.80
  6. Step 6: Final answer
    x = 126,940.42

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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.