Home / 87,837.30-131,561.55-72,285.30

Finding the Fourth Proportional to 87,837.30, 131,561.55 and 72,285.30

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Solution

The fourth proportional to 87,837.30, 131,561.55 and 72,285.30 is: 108,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,837.30 : 131,561.55 = 72,285.30 : x
  2. Step 2: Convert to fraction form
    87,837.30/131,561.55 = 72,285.30/x
  3. Step 3: Cross multiply
    87,837.30x = 131,561.55 × 72,285.30
  4. Step 4: Simplify right side
    87,837.30x = 9,509,966,110.22
  5. Step 5: Solve for x
    x = 9,509,966,110.22/87,837.30
  6. Step 6: Final answer
    x = 108,267.97

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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.