Home / 142,545.46-196,709.97-78,882.10

Finding the Fourth Proportional to 142,545.46, 196,709.97 and 78,882.10

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Solution

The fourth proportional to 142,545.46, 196,709.97 and 78,882.10 is: 108,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,545.46 : 196,709.97 = 78,882.10 : x
  2. Step 2: Convert to fraction form
    142,545.46/196,709.97 = 78,882.10/x
  3. Step 3: Cross multiply
    142,545.46x = 196,709.97 × 78,882.10
  4. Step 4: Simplify right side
    142,545.46x = 15,516,895,524.54
  5. Step 5: Solve for x
    x = 15,516,895,524.54/142,545.46
  6. Step 6: Final answer
    x = 108,855.77

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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.