Home / 120,629.43-181,062.55-100,766.51

Finding the Fourth Proportional to 120,629.43, 181,062.55 and 100,766.51

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Solution

The fourth proportional to 120,629.43, 181,062.55 and 100,766.51 is: 151,248.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,629.43 : 181,062.55 = 100,766.51 : x
  2. Step 2: Convert to fraction form
    120,629.43/181,062.55 = 100,766.51/x
  3. Step 3: Cross multiply
    120,629.43x = 181,062.55 × 100,766.51
  4. Step 4: Simplify right side
    120,629.43x = 18,245,041,295.42
  5. Step 5: Solve for x
    x = 18,245,041,295.42/120,629.43
  6. Step 6: Final answer
    x = 151,248.68

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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.