Home / 181,268.20-250,143.16-100,700.78

Finding the Fourth Proportional to 181,268.20, 250,143.16 and 100,700.78

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Solution

The fourth proportional to 181,268.20, 250,143.16 and 100,700.78 is: 138,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,268.20 : 250,143.16 = 100,700.78 : x
  2. Step 2: Convert to fraction form
    181,268.20/250,143.16 = 100,700.78/x
  3. Step 3: Cross multiply
    181,268.20x = 250,143.16 × 100,700.78
  4. Step 4: Simplify right side
    181,268.20x = 25,189,611,323.66
  5. Step 5: Solve for x
    x = 25,189,611,323.66/181,268.20
  6. Step 6: Final answer
    x = 138,963.21

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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.