Home / 143,964.13-198,669.18-79,433.96

Finding the Fourth Proportional to 143,964.13, 198,669.18 and 79,433.96

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Solution

The fourth proportional to 143,964.13, 198,669.18 and 79,433.96 is: 109,618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,964.13 : 198,669.18 = 79,433.96 : x
  2. Step 2: Convert to fraction form
    143,964.13/198,669.18 = 79,433.96/x
  3. Step 3: Cross multiply
    143,964.13x = 198,669.18 × 79,433.96
  4. Step 4: Simplify right side
    143,964.13x = 15,781,079,697.35
  5. Step 5: Solve for x
    x = 15,781,079,697.35/143,964.13
  6. Step 6: Final answer
    x = 109,618.14

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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.