Home / 142,576.03-196,752.54-78,912.46

Finding the Fourth Proportional to 142,576.03, 196,752.54 and 78,912.46

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Solution

The fourth proportional to 142,576.03, 196,752.54 and 78,912.46 is: 108,897.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,576.03 : 196,752.54 = 78,912.46 : x
  2. Step 2: Convert to fraction form
    142,576.03/196,752.54 = 78,912.46/x
  3. Step 3: Cross multiply
    142,576.03x = 196,752.54 × 78,912.46
  4. Step 4: Simplify right side
    142,576.03x = 15,526,226,942.65
  5. Step 5: Solve for x
    x = 15,526,226,942.65/142,576.03
  6. Step 6: Final answer
    x = 108,897.88

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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.