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Finding the Fourth Proportional to 168,041.40, 231,894.20 and 91,561.13

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Solution

The fourth proportional to 168,041.40, 231,894.20 and 91,561.13 is: 126,352.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,041.40 : 231,894.20 = 91,561.13 : x
  2. Step 2: Convert to fraction form
    168,041.40/231,894.20 = 91,561.13/x
  3. Step 3: Cross multiply
    168,041.40x = 231,894.20 × 91,561.13
  4. Step 4: Simplify right side
    168,041.40x = 21,232,493,375.17
  5. Step 5: Solve for x
    x = 21,232,493,375.17/168,041.40
  6. Step 6: Final answer
    x = 126,352.75

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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.