Home / 132,912,487.10-199,368,730.65-78,268,979.90

Finding the Fourth Proportional to 132,912,487.10, 199,368,730.65 and 78,268,979.90

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Solution

The fourth proportional to 132,912,487.10, 199,368,730.65 and 78,268,979.90 is: 117,403,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,912,487.10 : 199,368,730.65 = 78,268,979.90 : x
  2. Step 2: Convert to fraction form
    132,912,487.10/199,368,730.65 = 78,268,979.90/x
  3. Step 3: Cross multiply
    132,912,487.10x = 199,368,730.65 × 78,268,979.90
  4. Step 4: Simplify right side
    132,912,487.10x = 15,604,387,171,933,366
  5. Step 5: Solve for x
    x = 15,604,387,171,933,366/132,912,487.10
  6. Step 6: Final answer
    x = 117,403,469.85

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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.