Home / 142,711.49-196,948.34-79,049.28

Finding the Fourth Proportional to 142,711.49, 196,948.34 and 79,049.28

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Solution

The fourth proportional to 142,711.49, 196,948.34 and 79,049.28 is: 109,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,711.49 : 196,948.34 = 79,049.28 : x
  2. Step 2: Convert to fraction form
    142,711.49/196,948.34 = 79,049.28/x
  3. Step 3: Cross multiply
    142,711.49x = 196,948.34 × 79,049.28
  4. Step 4: Simplify right side
    142,711.49x = 15,568,624,078.95
  5. Step 5: Solve for x
    x = 15,568,624,078.95/142,711.49
  6. Step 6: Final answer
    x = 109,091.60

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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.