Home / 155,940,621.20-215,200,593.96-85,375,045.52

Finding the Fourth Proportional to 155,940,621.20, 215,200,593.96 and 85,375,045.52

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Solution

The fourth proportional to 155,940,621.20, 215,200,593.96 and 85,375,045.52 is: 117,818,951.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,940,621.20 : 215,200,593.96 = 85,375,045.52 : x
  2. Step 2: Convert to fraction form
    155,940,621.20/215,200,593.96 = 85,375,045.52/x
  3. Step 3: Cross multiply
    155,940,621.20x = 215,200,593.96 × 85,375,045.52
  4. Step 4: Simplify right side
    155,940,621.20x = 18,372,760,505,266,036
  5. Step 5: Solve for x
    x = 18,372,760,505,266,036/155,940,621.20
  6. Step 6: Final answer
    x = 117,818,951.62

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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.