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Finding the Fourth Proportional to 143,686.99, 198,294.17 and 80,024.78

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Solution

The fourth proportional to 143,686.99, 198,294.17 and 80,024.78 is: 110,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,686.99 : 198,294.17 = 80,024.78 : x
  2. Step 2: Convert to fraction form
    143,686.99/198,294.17 = 80,024.78/x
  3. Step 3: Cross multiply
    143,686.99x = 198,294.17 × 80,024.78
  4. Step 4: Simplify right side
    143,686.99x = 15,868,447,625.21
  5. Step 5: Solve for x
    x = 15,868,447,625.21/143,686.99
  6. Step 6: Final answer
    x = 110,437.61

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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.