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Finding the Fourth Proportional to 100,691.19, 151,027.02 and 30,571.11

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Solution

The fourth proportional to 100,691.19, 151,027.02 and 30,571.11 is: 45,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,691.19 : 151,027.02 = 30,571.11 : x
  2. Step 2: Convert to fraction form
    100,691.19/151,027.02 = 30,571.11/x
  3. Step 3: Cross multiply
    100,691.19x = 151,027.02 × 30,571.11
  4. Step 4: Simplify right side
    100,691.19x = 4,617,063,641.39
  5. Step 5: Solve for x
    x = 4,617,063,641.39/100,691.19
  6. Step 6: Final answer
    x = 45,853.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.