Home / 142,876.72-197,162.64-79,213.92

Finding the Fourth Proportional to 142,876.72, 197,162.64 and 79,213.92

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Solution

The fourth proportional to 142,876.72, 197,162.64 and 79,213.92 is: 109,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,876.72 : 197,162.64 = 79,213.92 : x
  2. Step 2: Convert to fraction form
    142,876.72/197,162.64 = 79,213.92/x
  3. Step 3: Cross multiply
    142,876.72x = 197,162.64 × 79,213.92
  4. Step 4: Simplify right side
    142,876.72x = 15,618,025,591.95
  5. Step 5: Solve for x
    x = 15,618,025,591.95/142,876.72
  6. Step 6: Final answer
    x = 109,311.20

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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.