Home / 142,450.33-196,568.25-78,786.76

Finding the Fourth Proportional to 142,450.33, 196,568.25 and 78,786.76

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Solution

The fourth proportional to 142,450.33, 196,568.25 and 78,786.76 is: 108,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,450.33 : 196,568.25 = 78,786.76 : x
  2. Step 2: Convert to fraction form
    142,450.33/196,568.25 = 78,786.76/x
  3. Step 3: Cross multiply
    142,450.33x = 196,568.25 × 78,786.76
  4. Step 4: Simplify right side
    142,450.33x = 15,486,975,044.95
  5. Step 5: Solve for x
    x = 15,486,975,044.95/142,450.33
  6. Step 6: Final answer
    x = 108,718.42

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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.