Home / 143,712.70-198,318.18-80,049.13

Finding the Fourth Proportional to 143,712.70, 198,318.18 and 80,049.13

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Solution

The fourth proportional to 143,712.70, 198,318.18 and 80,049.13 is: 110,464.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,712.70 : 198,318.18 = 80,049.13 : x
  2. Step 2: Convert to fraction form
    143,712.70/198,318.18 = 80,049.13/x
  3. Step 3: Cross multiply
    143,712.70x = 198,318.18 × 80,049.13
  4. Step 4: Simplify right side
    143,712.70x = 15,875,197,772.18
  5. Step 5: Solve for x
    x = 15,875,197,772.18/143,712.70
  6. Step 6: Final answer
    x = 110,464.82

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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.