Home / 142,286.07-196,358.74-78,627.97

Finding the Fourth Proportional to 142,286.07, 196,358.74 and 78,627.97

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Solution

The fourth proportional to 142,286.07, 196,358.74 and 78,627.97 is: 108,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,286.07 : 196,358.74 = 78,627.97 : x
  2. Step 2: Convert to fraction form
    142,286.07/196,358.74 = 78,627.97/x
  3. Step 3: Cross multiply
    142,286.07x = 196,358.74 × 78,627.97
  4. Step 4: Simplify right side
    142,286.07x = 15,439,288,430.49
  5. Step 5: Solve for x
    x = 15,439,288,430.49/142,286.07
  6. Step 6: Final answer
    x = 108,508.78

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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.