Home / 87,703.20-131,490-72,851.04

Finding the Fourth Proportional to 87,703.20, 131,490 and 72,851.04

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Solution

The fourth proportional to 87,703.20, 131,490 and 72,851.04 is: 109,222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,703.20 : 131,490 = 72,851.04 : x
  2. Step 2: Convert to fraction form
    87,703.20/131,490 = 72,851.04/x
  3. Step 3: Cross multiply
    87,703.20x = 131,490 × 72,851.04
  4. Step 4: Simplify right side
    87,703.20x = 9,579,183,249.60
  5. Step 5: Solve for x
    x = 9,579,183,249.60/87,703.20
  6. Step 6: Final answer
    x = 109,222.73

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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.