Home / 123,519.18-170,456.73-66,930.57

Finding the Fourth Proportional to 123,519.18, 170,456.73 and 66,930.57

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Solution

The fourth proportional to 123,519.18, 170,456.73 and 66,930.57 is: 92,364.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,519.18 : 170,456.73 = 66,930.57 : x
  2. Step 2: Convert to fraction form
    123,519.18/170,456.73 = 66,930.57/x
  3. Step 3: Cross multiply
    123,519.18x = 170,456.73 × 66,930.57
  4. Step 4: Simplify right side
    123,519.18x = 11,408,766,099.24
  5. Step 5: Solve for x
    x = 11,408,766,099.24/123,519.18
  6. Step 6: Final answer
    x = 92,364.33

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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.