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Finding the Fourth Proportional to 172,398.60, 258,597.90 and 88,126.20

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Solution

The fourth proportional to 172,398.60, 258,597.90 and 88,126.20 is: 132,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,398.60 : 258,597.90 = 88,126.20 : x
  2. Step 2: Convert to fraction form
    172,398.60/258,597.90 = 88,126.20/x
  3. Step 3: Cross multiply
    172,398.60x = 258,597.90 × 88,126.20
  4. Step 4: Simplify right side
    172,398.60x = 22,789,250,254.98
  5. Step 5: Solve for x
    x = 22,789,250,254.98/172,398.60
  6. Step 6: Final answer
    x = 132,189.30

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1.5x scale

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.