Home / 87,499.99-131,127.90-66,135.14

Finding the Fourth Proportional to 87,499.99, 131,127.90 and 66,135.14

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Solution

The fourth proportional to 87,499.99, 131,127.90 and 66,135.14 is: 99,110.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,499.99 : 131,127.90 = 66,135.14 : x
  2. Step 2: Convert to fraction form
    87,499.99/131,127.90 = 66,135.14/x
  3. Step 3: Cross multiply
    87,499.99x = 131,127.90 × 66,135.14
  4. Step 4: Simplify right side
    87,499.99x = 8,672,162,024.41
  5. Step 5: Solve for x
    x = 8,672,162,024.41/87,499.99
  6. Step 6: Final answer
    x = 99,110.43

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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.