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Finding the Fourth Proportional to 132,354.10, 198,531.15 and 115,246.90

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Solution

The fourth proportional to 132,354.10, 198,531.15 and 115,246.90 is: 172,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,354.10 : 198,531.15 = 115,246.90 : x
  2. Step 2: Convert to fraction form
    132,354.10/198,531.15 = 115,246.90/x
  3. Step 3: Cross multiply
    132,354.10x = 198,531.15 × 115,246.90
  4. Step 4: Simplify right side
    132,354.10x = 22,880,099,590.94
  5. Step 5: Solve for x
    x = 22,880,099,590.94/132,354.10
  6. Step 6: Final answer
    x = 172,870.35

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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.