Home / 121,217.78-181,855.26-38,111.78

Finding the Fourth Proportional to 121,217.78, 181,855.26 and 38,111.78

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Solution

The fourth proportional to 121,217.78, 181,855.26 and 38,111.78 is: 57,176.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,217.78 : 181,855.26 = 38,111.78 : x
  2. Step 2: Convert to fraction form
    121,217.78/181,855.26 = 38,111.78/x
  3. Step 3: Cross multiply
    121,217.78x = 181,855.26 × 38,111.78
  4. Step 4: Simplify right side
    121,217.78x = 6,930,827,660.96
  5. Step 5: Solve for x
    x = 6,930,827,660.96/121,217.78
  6. Step 6: Final answer
    x = 57,176.66

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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.