Home / 123,391.18-170,279.88-66,802.54

Finding the Fourth Proportional to 123,391.18, 170,279.88 and 66,802.54

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Solution

The fourth proportional to 123,391.18, 170,279.88 and 66,802.54 is: 92,187.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,391.18 : 170,279.88 = 66,802.54 : x
  2. Step 2: Convert to fraction form
    123,391.18/170,279.88 = 66,802.54/x
  3. Step 3: Cross multiply
    123,391.18x = 170,279.88 × 66,802.54
  4. Step 4: Simplify right side
    123,391.18x = 11,375,128,494.90
  5. Step 5: Solve for x
    x = 11,375,128,494.90/123,391.18
  6. Step 6: Final answer
    x = 92,187.53

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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.