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Finding the Fourth Proportional to 101,129.52, 139,451.04 and 69,247.92

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Solution

The fourth proportional to 101,129.52, 139,451.04 and 69,247.92 is: 95,488.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,129.52 : 139,451.04 = 69,247.92 : x
  2. Step 2: Convert to fraction form
    101,129.52/139,451.04 = 69,247.92/x
  3. Step 3: Cross multiply
    101,129.52x = 139,451.04 × 69,247.92
  4. Step 4: Simplify right side
    101,129.52x = 9,656,694,461.84
  5. Step 5: Solve for x
    x = 9,656,694,461.84/101,129.52
  6. Step 6: Final answer
    x = 95,488.38

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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.