Home / 272,743.88-409,132.22-85,755.38

Finding the Fourth Proportional to 272,743.88, 409,132.22 and 85,755.38

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Solution

The fourth proportional to 272,743.88, 409,132.22 and 85,755.38 is: 128,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,743.88 : 409,132.22 = 85,755.38 : x
  2. Step 2: Convert to fraction form
    272,743.88/409,132.22 = 85,755.38/x
  3. Step 3: Cross multiply
    272,743.88x = 409,132.22 × 85,755.38
  4. Step 4: Simplify right side
    272,743.88x = 35,085,286,521.91
  5. Step 5: Solve for x
    x = 35,085,286,521.91/272,743.88
  6. Step 6: Final answer
    x = 128,638.22

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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.