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Finding the Fourth Proportional to 168,123.10, 232,006.68 and 91,642.90

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Solution

The fourth proportional to 168,123.10, 232,006.68 and 91,642.90 is: 126,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,123.10 : 232,006.68 = 91,642.90 : x
  2. Step 2: Convert to fraction form
    168,123.10/232,006.68 = 91,642.90/x
  3. Step 3: Cross multiply
    168,123.10x = 232,006.68 × 91,642.90
  4. Step 4: Simplify right side
    168,123.10x = 21,261,764,974.57
  5. Step 5: Solve for x
    x = 21,261,764,974.57/168,123.10
  6. Step 6: Final answer
    x = 126,465.46

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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.