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Finding the Fourth Proportional to 143,686.76, 198,287.72 and 80,024.56

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Solution

The fourth proportional to 143,686.76, 198,287.72 and 80,024.56 is: 110,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,686.76 : 198,287.72 = 80,024.56 : x
  2. Step 2: Convert to fraction form
    143,686.76/198,287.72 = 80,024.56/x
  3. Step 3: Cross multiply
    143,686.76x = 198,287.72 × 80,024.56
  4. Step 4: Simplify right side
    143,686.76x = 15,867,887,546.40
  5. Step 5: Solve for x
    x = 15,867,887,546.40/143,686.76
  6. Step 6: Final answer
    x = 110,433.89

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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.