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Finding the Fourth Proportional to 84,144.92, 126,254.44 and 65,396.87

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Solution

The fourth proportional to 84,144.92, 126,254.44 and 65,396.87 is: 98,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,144.92 : 126,254.44 = 65,396.87 : x
  2. Step 2: Convert to fraction form
    84,144.92/126,254.44 = 65,396.87/x
  3. Step 3: Cross multiply
    84,144.92x = 126,254.44 × 65,396.87
  4. Step 4: Simplify right side
    84,144.92x = 8,256,644,568.33
  5. Step 5: Solve for x
    x = 8,256,644,568.33/84,144.92
  6. Step 6: Final answer
    x = 98,124.10

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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.