Home / 168,129.12-232,008.66-100,222.80

Finding the Fourth Proportional to 168,129.12, 232,008.66 and 100,222.80

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Solution

The fourth proportional to 168,129.12, 232,008.66 and 100,222.80 is: 138,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,129.12 : 232,008.66 = 100,222.80 : x
  2. Step 2: Convert to fraction form
    168,129.12/232,008.66 = 100,222.80/x
  3. Step 3: Cross multiply
    168,129.12x = 232,008.66 × 100,222.80
  4. Step 4: Simplify right side
    168,129.12x = 23,252,557,529.45
  5. Step 5: Solve for x
    x = 23,252,557,529.45/168,129.12
  6. Step 6: Final answer
    x = 138,301.79

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1.5x scale

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.