Home / 132,890,711.10-199,336,066.65-78,247,203.90

Finding the Fourth Proportional to 132,890,711.10, 199,336,066.65 and 78,247,203.90

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Solution

The fourth proportional to 132,890,711.10, 199,336,066.65 and 78,247,203.90 is: 117,370,805.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,890,711.10 : 199,336,066.65 = 78,247,203.90 : x
  2. Step 2: Convert to fraction form
    132,890,711.10/199,336,066.65 = 78,247,203.90/x
  3. Step 3: Cross multiply
    132,890,711.10x = 199,336,066.65 × 78,247,203.90
  4. Step 4: Simplify right side
    132,890,711.10x = 15,597,489,851,786,542
  5. Step 5: Solve for x
    x = 15,597,489,851,786,542/132,890,711.10
  6. Step 6: Final answer
    x = 117,370,805.85

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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.