Home / 142,958.87-197,306.90-79,317.17

Finding the Fourth Proportional to 142,958.87, 197,306.90 and 79,317.17

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Solution

The fourth proportional to 142,958.87, 197,306.90 and 79,317.17 is: 109,470.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,958.87 : 197,306.90 = 79,317.17 : x
  2. Step 2: Convert to fraction form
    142,958.87/197,306.90 = 79,317.17/x
  3. Step 3: Cross multiply
    142,958.87x = 197,306.90 × 79,317.17
  4. Step 4: Simplify right side
    142,958.87x = 15,649,823,546.35
  5. Step 5: Solve for x
    x = 15,649,823,546.35/142,958.87
  6. Step 6: Final answer
    x = 109,470.82

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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.