Home / 120,619.40-180,929.10-101,082.20

Finding the Fourth Proportional to 120,619.40, 180,929.10 and 101,082.20

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Solution

The fourth proportional to 120,619.40, 180,929.10 and 101,082.20 is: 151,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,619.40 : 180,929.10 = 101,082.20 : x
  2. Step 2: Convert to fraction form
    120,619.40/180,929.10 = 101,082.20/x
  3. Step 3: Cross multiply
    120,619.40x = 180,929.10 × 101,082.20
  4. Step 4: Simplify right side
    120,619.40x = 18,288,711,472.02
  5. Step 5: Solve for x
    x = 18,288,711,472.02/120,619.40
  6. Step 6: Final answer
    x = 151,623.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.