Home / 87,329.60-131,188.80-83,787.20

Finding the Fourth Proportional to 87,329.60, 131,188.80 and 83,787.20

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Solution

The fourth proportional to 87,329.60, 131,188.80 and 83,787.20 is: 125,867.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,329.60 : 131,188.80 = 83,787.20 : x
  2. Step 2: Convert to fraction form
    87,329.60/131,188.80 = 83,787.20/x
  3. Step 3: Cross multiply
    87,329.60x = 131,188.80 × 83,787.20
  4. Step 4: Simplify right side
    87,329.60x = 10,991,942,223.36
  5. Step 5: Solve for x
    x = 10,991,942,223.36/87,329.60
  6. Step 6: Final answer
    x = 125,867.31

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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.