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Finding the Fourth Proportional to 172,290.60, 258,047.10 and 102,306.60

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Solution

The fourth proportional to 172,290.60, 258,047.10 and 102,306.60 is: 153,229.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,290.60 : 258,047.10 = 102,306.60 : x
  2. Step 2: Convert to fraction form
    172,290.60/258,047.10 = 102,306.60/x
  3. Step 3: Cross multiply
    172,290.60x = 258,047.10 × 102,306.60
  4. Step 4: Simplify right side
    172,290.60x = 26,399,921,440.86
  5. Step 5: Solve for x
    x = 26,399,921,440.86/172,290.60
  6. Step 6: Final answer
    x = 153,229.03

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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.