Home / 168,043.02-231,793.42-100,009.20

Finding the Fourth Proportional to 168,043.02, 231,793.42 and 100,009.20

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Solution

The fourth proportional to 168,043.02, 231,793.42 and 100,009.20 is: 137,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,043.02 : 231,793.42 = 100,009.20 : x
  2. Step 2: Convert to fraction form
    168,043.02/231,793.42 = 100,009.20/x
  3. Step 3: Cross multiply
    168,043.02x = 231,793.42 × 100,009.20
  4. Step 4: Simplify right side
    168,043.02x = 23,181,474,499.46
  5. Step 5: Solve for x
    x = 23,181,474,499.46/168,043.02
  6. Step 6: Final answer
    x = 137,949.64

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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.