Home / 123,456.54-170,370.78-66,867.92

Finding the Fourth Proportional to 123,456.54, 170,370.78 and 66,867.92

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Solution

The fourth proportional to 123,456.54, 170,370.78 and 66,867.92 is: 92,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,456.54 : 170,370.78 = 66,867.92 : x
  2. Step 2: Convert to fraction form
    123,456.54/170,370.78 = 66,867.92/x
  3. Step 3: Cross multiply
    123,456.54x = 170,370.78 × 66,867.92
  4. Step 4: Simplify right side
    123,456.54x = 11,392,339,687.38
  5. Step 5: Solve for x
    x = 11,392,339,687.38/123,456.54
  6. Step 6: Final answer
    x = 92,278.14

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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.