Home / 120,521.20-166,301.78-66,806.20

Finding the Fourth Proportional to 120,521.20, 166,301.78 and 66,806.20

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Solution

The fourth proportional to 120,521.20, 166,301.78 and 66,806.20 is: 92,182.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,521.20 : 166,301.78 = 66,806.20 : x
  2. Step 2: Convert to fraction form
    120,521.20/166,301.78 = 66,806.20/x
  3. Step 3: Cross multiply
    120,521.20x = 166,301.78 × 66,806.20
  4. Step 4: Simplify right side
    120,521.20x = 11,109,989,975.04
  5. Step 5: Solve for x
    x = 11,109,989,975.04/120,521.20
  6. Step 6: Final answer
    x = 92,182.87

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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.