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Finding the Fourth Proportional to 125,316.57, 172,946.03 and 71,600.43

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Solution

The fourth proportional to 125,316.57, 172,946.03 and 71,600.43 is: 98,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,316.57 : 172,946.03 = 71,600.43 : x
  2. Step 2: Convert to fraction form
    125,316.57/172,946.03 = 71,600.43/x
  3. Step 3: Cross multiply
    125,316.57x = 172,946.03 × 71,600.43
  4. Step 4: Simplify right side
    125,316.57x = 12,383,010,114.79
  5. Step 5: Solve for x
    x = 12,383,010,114.79/125,316.57
  6. Step 6: Final answer
    x = 98,813.83

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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.