Home / 121,153.12-181,759.92-42,268

Finding the Fourth Proportional to 121,153.12, 181,759.92 and 42,268

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Solution

The fourth proportional to 121,153.12, 181,759.92 and 42,268 is: 63,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,153.12 : 181,759.92 = 42,268 : x
  2. Step 2: Convert to fraction form
    121,153.12/181,759.92 = 42,268/x
  3. Step 3: Cross multiply
    121,153.12x = 181,759.92 × 42,268
  4. Step 4: Simplify right side
    121,153.12x = 7,682,628,298.56
  5. Step 5: Solve for x
    x = 7,682,628,298.56/121,153.12
  6. Step 6: Final answer
    x = 63,412.55

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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.