Home / 121,122.36-181,691.22-38,019.64

Finding the Fourth Proportional to 121,122.36, 181,691.22 and 38,019.64

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Solution

The fourth proportional to 121,122.36, 181,691.22 and 38,019.64 is: 57,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,122.36 : 181,691.22 = 38,019.64 : x
  2. Step 2: Convert to fraction form
    121,122.36/181,691.22 = 38,019.64/x
  3. Step 3: Cross multiply
    121,122.36x = 181,691.22 × 38,019.64
  4. Step 4: Simplify right side
    121,122.36x = 6,907,834,775.56
  5. Step 5: Solve for x
    x = 6,907,834,775.56/121,122.36
  6. Step 6: Final answer
    x = 57,031.87

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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.