Home / 143,965.20-198,670.62-79,435.03

Finding the Fourth Proportional to 143,965.20, 198,670.62 and 79,435.03

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Solution

The fourth proportional to 143,965.20, 198,670.62 and 79,435.03 is: 109,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,965.20 : 198,670.62 = 79,435.03 : x
  2. Step 2: Convert to fraction form
    143,965.20/198,670.62 = 79,435.03/x
  3. Step 3: Cross multiply
    143,965.20x = 198,670.62 × 79,435.03
  4. Step 4: Simplify right side
    143,965.20x = 15,781,406,833.53
  5. Step 5: Solve for x
    x = 15,781,406,833.53/143,965.20
  6. Step 6: Final answer
    x = 109,619.60

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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.