Home / 80,085.54-120,668.88-66,351.18

Finding the Fourth Proportional to 80,085.54, 120,668.88 and 66,351.18

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Solution

The fourth proportional to 80,085.54, 120,668.88 and 66,351.18 is: 99,974.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,085.54 : 120,668.88 = 66,351.18 : x
  2. Step 2: Convert to fraction form
    80,085.54/120,668.88 = 66,351.18/x
  3. Step 3: Cross multiply
    80,085.54x = 120,668.88 × 66,351.18
  4. Step 4: Simplify right side
    80,085.54x = 8,006,522,577.28
  5. Step 5: Solve for x
    x = 8,006,522,577.28/80,085.54
  6. Step 6: Final answer
    x = 99,974.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.