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Finding the Fourth Proportional to 101,607.38, 140,218.16 and 55,668.65

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Solution

The fourth proportional to 101,607.38, 140,218.16 and 55,668.65 is: 76,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,607.38 : 140,218.16 = 55,668.65 : x
  2. Step 2: Convert to fraction form
    101,607.38/140,218.16 = 55,668.65/x
  3. Step 3: Cross multiply
    101,607.38x = 140,218.16 × 55,668.65
  4. Step 4: Simplify right side
    101,607.38x = 7,805,755,953.64
  5. Step 5: Solve for x
    x = 7,805,755,953.64/101,607.38
  6. Step 6: Final answer
    x = 76,822.73

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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.