Home / 121,619.78-167,863.29-71,334.98

Finding the Fourth Proportional to 121,619.78, 167,863.29 and 71,334.98

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Solution

The fourth proportional to 121,619.78, 167,863.29 and 71,334.98 is: 98,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,619.78 : 167,863.29 = 71,334.98 : x
  2. Step 2: Convert to fraction form
    121,619.78/167,863.29 = 71,334.98/x
  3. Step 3: Cross multiply
    121,619.78x = 167,863.29 × 71,334.98
  4. Step 4: Simplify right side
    121,619.78x = 11,974,524,434.88
  5. Step 5: Solve for x
    x = 11,974,524,434.88/121,619.78
  6. Step 6: Final answer
    x = 98,458.69

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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.