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Finding the Fourth Proportional to 144,082.38, 198,825.60 and 80,424.28

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Solution

The fourth proportional to 144,082.38, 198,825.60 and 80,424.28 is: 110,980.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,082.38 : 198,825.60 = 80,424.28 : x
  2. Step 2: Convert to fraction form
    144,082.38/198,825.60 = 80,424.28/x
  3. Step 3: Cross multiply
    144,082.38x = 198,825.60 × 80,424.28
  4. Step 4: Simplify right side
    144,082.38x = 15,990,405,725.57
  5. Step 5: Solve for x
    x = 15,990,405,725.57/144,082.38
  6. Step 6: Final answer
    x = 110,980.99

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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.