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Finding the Fourth Proportional to 172,498.57, 258,660.34 and 78,924.13

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Solution

The fourth proportional to 172,498.57, 258,660.34 and 78,924.13 is: 118,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,498.57 : 258,660.34 = 78,924.13 : x
  2. Step 2: Convert to fraction form
    172,498.57/258,660.34 = 78,924.13/x
  3. Step 3: Cross multiply
    172,498.57x = 258,660.34 × 78,924.13
  4. Step 4: Simplify right side
    172,498.57x = 20,414,542,300.00
  5. Step 5: Solve for x
    x = 20,414,542,300.00/172,498.57
  6. Step 6: Final answer
    x = 118,346.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.