Home / 143,650.13-198,235.28-79,118.12

Finding the Fourth Proportional to 143,650.13, 198,235.28 and 79,118.12

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Solution

The fourth proportional to 143,650.13, 198,235.28 and 79,118.12 is: 109,181.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,650.13 : 198,235.28 = 79,118.12 : x
  2. Step 2: Convert to fraction form
    143,650.13/198,235.28 = 79,118.12/x
  3. Step 3: Cross multiply
    143,650.13x = 198,235.28 × 79,118.12
  4. Step 4: Simplify right side
    143,650.13x = 15,684,003,364.66
  5. Step 5: Solve for x
    x = 15,684,003,364.66/143,650.13
  6. Step 6: Final answer
    x = 109,181.97

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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.