Home / 142,450.28-196,568.16-78,786.71

Finding the Fourth Proportional to 142,450.28, 196,568.16 and 78,786.71

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Solution

The fourth proportional to 142,450.28, 196,568.16 and 78,786.71 is: 108,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,450.28 : 196,568.16 = 78,786.71 : x
  2. Step 2: Convert to fraction form
    142,450.28/196,568.16 = 78,786.71/x
  3. Step 3: Cross multiply
    142,450.28x = 196,568.16 × 78,786.71
  4. Step 4: Simplify right side
    142,450.28x = 15,486,957,634.31
  5. Step 5: Solve for x
    x = 15,486,957,634.31/142,450.28
  6. Step 6: Final answer
    x = 108,718.34

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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.