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Finding the Fourth Proportional to 101,616.48, 140,299.20 and 63,434.16

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Solution

The fourth proportional to 101,616.48, 140,299.20 and 63,434.16 is: 87,581.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,616.48 : 140,299.20 = 63,434.16 : x
  2. Step 2: Convert to fraction form
    101,616.48/140,299.20 = 63,434.16/x
  3. Step 3: Cross multiply
    101,616.48x = 140,299.20 × 63,434.16
  4. Step 4: Simplify right side
    101,616.48x = 8,899,761,900.67
  5. Step 5: Solve for x
    x = 8,899,761,900.67/101,616.48
  6. Step 6: Final answer
    x = 87,581.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.