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Finding the Fourth Proportional to 132,422.60, 198,633.90 and 117,907.40

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Solution

The fourth proportional to 132,422.60, 198,633.90 and 117,907.40 is: 176,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,422.60 : 198,633.90 = 117,907.40 : x
  2. Step 2: Convert to fraction form
    132,422.60/198,633.90 = 117,907.40/x
  3. Step 3: Cross multiply
    132,422.60x = 198,633.90 × 117,907.40
  4. Step 4: Simplify right side
    132,422.60x = 23,420,406,700.86
  5. Step 5: Solve for x
    x = 23,420,406,700.86/132,422.60
  6. Step 6: Final answer
    x = 176,861.10

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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.