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Finding the Fourth Proportional to 100,624.28, 139,003.19 and 95,309.87

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Solution

The fourth proportional to 100,624.28, 139,003.19 and 95,309.87 is: 131,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,624.28 : 139,003.19 = 95,309.87 : x
  2. Step 2: Convert to fraction form
    100,624.28/139,003.19 = 95,309.87/x
  3. Step 3: Cross multiply
    100,624.28x = 139,003.19 × 95,309.87
  4. Step 4: Simplify right side
    100,624.28x = 13,248,375,154.33
  5. Step 5: Solve for x
    x = 13,248,375,154.33/100,624.28
  6. Step 6: Final answer
    x = 131,661.82

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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.