Home / 87,801,947.20-131,329,672.80-78,769,345.60

Finding the Fourth Proportional to 87,801,947.20, 131,329,672.80 and 78,769,345.60

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Solution

The fourth proportional to 87,801,947.20, 131,329,672.80 and 78,769,345.60 is: 117,819,168.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,801,947.20 : 131,329,672.80 = 78,769,345.60 : x
  2. Step 2: Convert to fraction form
    87,801,947.20/131,329,672.80 = 78,769,345.60/x
  3. Step 3: Cross multiply
    87,801,947.20x = 131,329,672.80 × 78,769,345.60
  4. Step 4: Simplify right side
    87,801,947.20x = 10,344,752,384,318,118
  5. Step 5: Solve for x
    x = 10,344,752,384,318,118/87,801,947.20
  6. Step 6: Final answer
    x = 117,819,168.19

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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.