Home / 142,179.28-196,207.25-78,516.92

Finding the Fourth Proportional to 142,179.28, 196,207.25 and 78,516.92

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Solution

The fourth proportional to 142,179.28, 196,207.25 and 78,516.92 is: 108,353.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,179.28 : 196,207.25 = 78,516.92 : x
  2. Step 2: Convert to fraction form
    142,179.28/196,207.25 = 78,516.92/x
  3. Step 3: Cross multiply
    142,179.28x = 196,207.25 × 78,516.92
  4. Step 4: Simplify right side
    142,179.28x = 15,405,588,951.67
  5. Step 5: Solve for x
    x = 15,405,588,951.67/142,179.28
  6. Step 6: Final answer
    x = 108,353.27

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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.