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Finding the Fourth Proportional to 101,957.43, 140,752.38 and 63,738.23

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Solution

The fourth proportional to 101,957.43, 140,752.38 and 63,738.23 is: 87,990.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,957.43 : 140,752.38 = 63,738.23 : x
  2. Step 2: Convert to fraction form
    101,957.43/140,752.38 = 63,738.23/x
  3. Step 3: Cross multiply
    101,957.43x = 140,752.38 × 63,738.23
  4. Step 4: Simplify right side
    101,957.43x = 8,971,307,104.74
  5. Step 5: Solve for x
    x = 8,971,307,104.74/101,957.43
  6. Step 6: Final answer
    x = 87,990.71

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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.