Home / 231,748.49-347,778.56-81,988.20

Finding the Fourth Proportional to 231,748.49, 347,778.56 and 81,988.20

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Solution

The fourth proportional to 231,748.49, 347,778.56 and 81,988.20 is: 123,037.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,748.49 : 347,778.56 = 81,988.20 : x
  2. Step 2: Convert to fraction form
    231,748.49/347,778.56 = 81,988.20/x
  3. Step 3: Cross multiply
    231,748.49x = 347,778.56 × 81,988.20
  4. Step 4: Simplify right side
    231,748.49x = 28,513,738,337.96
  5. Step 5: Solve for x
    x = 28,513,738,337.96/231,748.49
  6. Step 6: Final answer
    x = 123,037.43

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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.