Home / 87,502.49-131,131.65-66,137.64

Finding the Fourth Proportional to 87,502.49, 131,131.65 and 66,137.64

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Solution

The fourth proportional to 87,502.49, 131,131.65 and 66,137.64 is: 99,114.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,502.49 : 131,131.65 = 66,137.64 : x
  2. Step 2: Convert to fraction form
    87,502.49/131,131.65 = 66,137.64/x
  3. Step 3: Cross multiply
    87,502.49x = 131,131.65 × 66,137.64
  4. Step 4: Simplify right side
    87,502.49x = 8,672,737,860.31
  5. Step 5: Solve for x
    x = 8,672,737,860.31/87,502.49
  6. Step 6: Final answer
    x = 99,114.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.