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Finding the Fourth Proportional to 172,443.60, 258,184.80 and 88,022.16

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Solution

The fourth proportional to 172,443.60, 258,184.80 and 88,022.16 is: 131,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,443.60 : 258,184.80 = 88,022.16 : x
  2. Step 2: Convert to fraction form
    172,443.60/258,184.80 = 88,022.16/x
  3. Step 3: Cross multiply
    172,443.60x = 258,184.80 × 88,022.16
  4. Step 4: Simplify right side
    172,443.60x = 22,725,983,775.17
  5. Step 5: Solve for x
    x = 22,725,983,775.17/172,443.60
  6. Step 6: Final answer
    x = 131,787.92

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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.