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Finding the Fourth Proportional to 168,039.77, 231,892.16 and 91,559.88

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Solution

The fourth proportional to 168,039.77, 231,892.16 and 91,559.88 is: 126,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,039.77 : 231,892.16 = 91,559.88 : x
  2. Step 2: Convert to fraction form
    168,039.77/231,892.16 = 91,559.88/x
  3. Step 3: Cross multiply
    168,039.77x = 231,892.16 × 91,559.88
  4. Step 4: Simplify right side
    168,039.77x = 21,232,017,884.74
  5. Step 5: Solve for x
    x = 21,232,017,884.74/168,039.77
  6. Step 6: Final answer
    x = 126,351.15

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1.5x scale

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.