Home / 87,365.10-130,855.56-72,200.35

Finding the Fourth Proportional to 87,365.10, 130,855.56 and 72,200.35

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Solution

The fourth proportional to 87,365.10, 130,855.56 and 72,200.35 is: 108,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,365.10 : 130,855.56 = 72,200.35 : x
  2. Step 2: Convert to fraction form
    87,365.10/130,855.56 = 72,200.35/x
  3. Step 3: Cross multiply
    87,365.10x = 130,855.56 × 72,200.35
  4. Step 4: Simplify right side
    87,365.10x = 9,447,817,067.88
  5. Step 5: Solve for x
    x = 9,447,817,067.88/87,365.10
  6. Step 6: Final answer
    x = 108,141.78

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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.