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Finding the Fourth Proportional to 172,657.20, 259,139.64 and 88,474.68

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Solution

The fourth proportional to 172,657.20, 259,139.64 and 88,474.68 is: 132,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,657.20 : 259,139.64 = 88,474.68 : x
  2. Step 2: Convert to fraction form
    172,657.20/259,139.64 = 88,474.68/x
  3. Step 3: Cross multiply
    172,657.20x = 259,139.64 × 88,474.68
  4. Step 4: Simplify right side
    172,657.20x = 22,927,296,724.32
  5. Step 5: Solve for x
    x = 22,927,296,724.32/172,657.20
  6. Step 6: Final answer
    x = 132,790.85

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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.