Home / 143,948.40-198,648.12-79,415.88

Finding the Fourth Proportional to 143,948.40, 198,648.12 and 79,415.88

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Solution

The fourth proportional to 143,948.40, 198,648.12 and 79,415.88 is: 109,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,948.40 : 198,648.12 = 79,415.88 : x
  2. Step 2: Convert to fraction form
    143,948.40/198,648.12 = 79,415.88/x
  3. Step 3: Cross multiply
    143,948.40x = 198,648.12 × 79,415.88
  4. Step 4: Simplify right side
    143,948.40x = 15,775,815,260.15
  5. Step 5: Solve for x
    x = 15,775,815,260.15/143,948.40
  6. Step 6: Final answer
    x = 109,593.54

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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.