Home / 142,500.60-196,649.37-78,838.85

Finding the Fourth Proportional to 142,500.60, 196,649.37 and 78,838.85

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Solution

The fourth proportional to 142,500.60, 196,649.37 and 78,838.85 is: 108,796.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,500.60 : 196,649.37 = 78,838.85 : x
  2. Step 2: Convert to fraction form
    142,500.60/196,649.37 = 78,838.85/x
  3. Step 3: Cross multiply
    142,500.60x = 196,649.37 × 78,838.85
  4. Step 4: Simplify right side
    142,500.60x = 15,503,610,675.65
  5. Step 5: Solve for x
    x = 15,503,610,675.65/142,500.60
  6. Step 6: Final answer
    x = 108,796.81

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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.