Home / 78,251.20-117,176.40-43,151.92

Finding the Fourth Proportional to 78,251.20, 117,176.40 and 43,151.92

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Solution

The fourth proportional to 78,251.20, 117,176.40 and 43,151.92 is: 64,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,251.20 : 117,176.40 = 43,151.92 : x
  2. Step 2: Convert to fraction form
    78,251.20/117,176.40 = 43,151.92/x
  3. Step 3: Cross multiply
    78,251.20x = 117,176.40 × 43,151.92
  4. Step 4: Simplify right side
    78,251.20x = 5,056,386,638.69
  5. Step 5: Solve for x
    x = 5,056,386,638.69/78,251.20
  6. Step 6: Final answer
    x = 64,617.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.