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Finding the Fourth Proportional to 143,418.90, 197,898.89 and 79,744.44

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Solution

The fourth proportional to 143,418.90, 197,898.89 and 79,744.44 is: 110,036.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,418.90 : 197,898.89 = 79,744.44 : x
  2. Step 2: Convert to fraction form
    143,418.90/197,898.89 = 79,744.44/x
  3. Step 3: Cross multiply
    143,418.90x = 197,898.89 × 79,744.44
  4. Step 4: Simplify right side
    143,418.90x = 15,781,335,760.95
  5. Step 5: Solve for x
    x = 15,781,335,760.95/143,418.90
  6. Step 6: Final answer
    x = 110,036.65

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1.5x scale

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.