Home / 87,625.20-131,437.80-86,847.60

Finding the Fourth Proportional to 87,625.20, 131,437.80 and 86,847.60

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Solution

The fourth proportional to 87,625.20, 131,437.80 and 86,847.60 is: 130,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,625.20 : 131,437.80 = 86,847.60 : x
  2. Step 2: Convert to fraction form
    87,625.20/131,437.80 = 86,847.60/x
  3. Step 3: Cross multiply
    87,625.20x = 131,437.80 × 86,847.60
  4. Step 4: Simplify right side
    87,625.20x = 11,415,057,479.28
  5. Step 5: Solve for x
    x = 11,415,057,479.28/87,625.20
  6. Step 6: Final answer
    x = 130,271.40

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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.