Home / 87,501.49-131,130.15-66,136.64

Finding the Fourth Proportional to 87,501.49, 131,130.15 and 66,136.64

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Solution

The fourth proportional to 87,501.49, 131,130.15 and 66,136.64 is: 99,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,501.49 : 131,130.15 = 66,136.64 : x
  2. Step 2: Convert to fraction form
    87,501.49/131,130.15 = 66,136.64/x
  3. Step 3: Cross multiply
    87,501.49x = 131,130.15 × 66,136.64
  4. Step 4: Simplify right side
    87,501.49x = 8,672,507,523.70
  5. Step 5: Solve for x
    x = 8,672,507,523.70/87,501.49
  6. Step 6: Final answer
    x = 99,112.68

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1.5x scale

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.