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Finding the Fourth Proportional to 172,481.60, 258,376.80 and 98,523.20

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Solution

The fourth proportional to 172,481.60, 258,376.80 and 98,523.20 is: 147,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,481.60 : 258,376.80 = 98,523.20 : x
  2. Step 2: Convert to fraction form
    172,481.60/258,376.80 = 98,523.20/x
  3. Step 3: Cross multiply
    172,481.60x = 258,376.80 × 98,523.20
  4. Step 4: Simplify right side
    172,481.60x = 25,456,109,141.76
  5. Step 5: Solve for x
    x = 25,456,109,141.76/172,481.60
  6. Step 6: Final answer
    x = 147,587.39

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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.