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Finding the Fourth Proportional to 172,470.80, 258,552.30 and 67,265.30

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Solution

The fourth proportional to 172,470.80, 258,552.30 and 67,265.30 is: 100,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,470.80 : 258,552.30 = 67,265.30 : x
  2. Step 2: Convert to fraction form
    172,470.80/258,552.30 = 67,265.30/x
  3. Step 3: Cross multiply
    172,470.80x = 258,552.30 × 67,265.30
  4. Step 4: Simplify right side
    172,470.80x = 17,391,598,025.19
  5. Step 5: Solve for x
    x = 17,391,598,025.19/172,470.80
  6. Step 6: Final answer
    x = 100,837.93

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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.