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Finding the Fourth Proportional to 172,591.08, 258,948.90 and 60,287.88

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Solution

The fourth proportional to 172,591.08, 258,948.90 and 60,287.88 is: 90,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,591.08 : 258,948.90 = 60,287.88 : x
  2. Step 2: Convert to fraction form
    172,591.08/258,948.90 = 60,287.88/x
  3. Step 3: Cross multiply
    172,591.08x = 258,948.90 × 60,287.88
  4. Step 4: Simplify right side
    172,591.08x = 15,611,480,209.33
  5. Step 5: Solve for x
    x = 15,611,480,209.33/172,591.08
  6. Step 6: Final answer
    x = 90,453.58

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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.