Home / 142,711.12-196,934.26-78,180.62

Finding the Fourth Proportional to 142,711.12, 196,934.26 and 78,180.62

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Solution

The fourth proportional to 142,711.12, 196,934.26 and 78,180.62 is: 107,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,711.12 : 196,934.26 = 78,180.62 : x
  2. Step 2: Convert to fraction form
    142,711.12/196,934.26 = 78,180.62/x
  3. Step 3: Cross multiply
    142,711.12x = 196,934.26 × 78,180.62
  4. Step 4: Simplify right side
    142,711.12x = 15,396,442,286.27
  5. Step 5: Solve for x
    x = 15,396,442,286.27/142,711.12
  6. Step 6: Final answer
    x = 107,885.38

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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.