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Finding the Fourth Proportional to 143,597.70, 198,159.48 and 79,934.13

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Solution

The fourth proportional to 143,597.70, 198,159.48 and 79,934.13 is: 110,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,597.70 : 198,159.48 = 79,934.13 : x
  2. Step 2: Convert to fraction form
    143,597.70/198,159.48 = 79,934.13/x
  3. Step 3: Cross multiply
    143,597.70x = 198,159.48 × 79,934.13
  4. Step 4: Simplify right side
    143,597.70x = 15,839,705,635.05
  5. Step 5: Solve for x
    x = 15,839,705,635.05/143,597.70
  6. Step 6: Final answer
    x = 110,306.12

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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.