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Finding the Fourth Proportional to 101,279.64, 139,753.98 and 55,954.92

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Solution

The fourth proportional to 101,279.64, 139,753.98 and 55,954.92 is: 77,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,279.64 : 139,753.98 = 55,954.92 : x
  2. Step 2: Convert to fraction form
    101,279.64/139,753.98 = 55,954.92/x
  3. Step 3: Cross multiply
    101,279.64x = 139,753.98 × 55,954.92
  4. Step 4: Simplify right side
    101,279.64x = 7,819,923,294.66
  5. Step 5: Solve for x
    x = 7,819,923,294.66/101,279.64
  6. Step 6: Final answer
    x = 77,211.20

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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.