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Finding the Fourth Proportional to 168,079.70, 231,946.88 and 91,599.42

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Solution

The fourth proportional to 168,079.70, 231,946.88 and 91,599.42 is: 126,405.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,079.70 : 231,946.88 = 91,599.42 : x
  2. Step 2: Convert to fraction form
    168,079.70/231,946.88 = 91,599.42/x
  3. Step 3: Cross multiply
    168,079.70x = 231,946.88 × 91,599.42
  4. Step 4: Simplify right side
    168,079.70x = 21,246,199,678.81
  5. Step 5: Solve for x
    x = 21,246,199,678.81/168,079.70
  6. Step 6: Final answer
    x = 126,405.51

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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.