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Finding the Fourth Proportional to 122,992.92, 169,672.23 and 71,974.08

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Solution

The fourth proportional to 122,992.92, 169,672.23 and 71,974.08 is: 99,290.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,992.92 : 169,672.23 = 71,974.08 : x
  2. Step 2: Convert to fraction form
    122,992.92/169,672.23 = 71,974.08/x
  3. Step 3: Cross multiply
    122,992.92x = 169,672.23 × 71,974.08
  4. Step 4: Simplify right side
    122,992.92x = 12,212,002,655.80
  5. Step 5: Solve for x
    x = 12,212,002,655.80/122,992.92
  6. Step 6: Final answer
    x = 99,290.29

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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.