Home / 142,096.05-196,092.54-78,433.85

Finding the Fourth Proportional to 142,096.05, 196,092.54 and 78,433.85

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Solution

The fourth proportional to 142,096.05, 196,092.54 and 78,433.85 is: 108,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,096.05 : 196,092.54 = 78,433.85 : x
  2. Step 2: Convert to fraction form
    142,096.05/196,092.54 = 78,433.85/x
  3. Step 3: Cross multiply
    142,096.05x = 196,092.54 × 78,433.85
  4. Step 4: Simplify right side
    142,096.05x = 15,380,291,888.02
  5. Step 5: Solve for x
    x = 15,380,291,888.02/142,096.05
  6. Step 6: Final answer
    x = 108,238.70

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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.