Home / 142,174.76-196,201.17-78,516.65

Finding the Fourth Proportional to 142,174.76, 196,201.17 and 78,516.65

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Solution

The fourth proportional to 142,174.76, 196,201.17 and 78,516.65 is: 108,352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,174.76 : 196,201.17 = 78,516.65 : x
  2. Step 2: Convert to fraction form
    142,174.76/196,201.17 = 78,516.65/x
  3. Step 3: Cross multiply
    142,174.76x = 196,201.17 × 78,516.65
  4. Step 4: Simplify right side
    142,174.76x = 15,405,059,084.98
  5. Step 5: Solve for x
    x = 15,405,059,084.98/142,174.76
  6. Step 6: Final answer
    x = 108,352.98

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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.