Home / 142,609.20-196,738.92-85,989.12

Finding the Fourth Proportional to 142,609.20, 196,738.92 and 85,989.12

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Solution

The fourth proportional to 142,609.20, 196,738.92 and 85,989.12 is: 118,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,609.20 : 196,738.92 = 85,989.12 : x
  2. Step 2: Convert to fraction form
    142,609.20/196,738.92 = 85,989.12/x
  3. Step 3: Cross multiply
    142,609.20x = 196,738.92 × 85,989.12
  4. Step 4: Simplify right side
    142,609.20x = 16,917,406,600.55
  5. Step 5: Solve for x
    x = 16,917,406,600.55/142,609.20
  6. Step 6: Final answer
    x = 118,627.74

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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.