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Finding the Fourth Proportional to 100,891.86, 151,337.72 and 47,571.39

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Solution

The fourth proportional to 100,891.86, 151,337.72 and 47,571.39 is: 71,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,891.86 : 151,337.72 = 47,571.39 : x
  2. Step 2: Convert to fraction form
    100,891.86/151,337.72 = 47,571.39/x
  3. Step 3: Cross multiply
    100,891.86x = 151,337.72 × 47,571.39
  4. Step 4: Simplify right side
    100,891.86x = 7,199,345,461.97
  5. Step 5: Solve for x
    x = 7,199,345,461.97/100,891.86
  6. Step 6: Final answer
    x = 71,357.05

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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.