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Finding the Fourth Proportional to 172,092.60, 258,138.90 and 45,732.60

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Solution

The fourth proportional to 172,092.60, 258,138.90 and 45,732.60 is: 68,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,092.60 : 258,138.90 = 45,732.60 : x
  2. Step 2: Convert to fraction form
    172,092.60/258,138.90 = 45,732.60/x
  3. Step 3: Cross multiply
    172,092.60x = 258,138.90 × 45,732.60
  4. Step 4: Simplify right side
    172,092.60x = 11,805,363,058.14
  5. Step 5: Solve for x
    x = 11,805,363,058.14/172,092.60
  6. Step 6: Final answer
    x = 68,598.90

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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.