Home / 121,619.28-167,862.60-71,334.48

Finding the Fourth Proportional to 121,619.28, 167,862.60 and 71,334.48

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Solution

The fourth proportional to 121,619.28, 167,862.60 and 71,334.48 is: 98,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,619.28 : 167,862.60 = 71,334.48 : x
  2. Step 2: Convert to fraction form
    121,619.28/167,862.60 = 71,334.48/x
  3. Step 3: Cross multiply
    121,619.28x = 167,862.60 × 71,334.48
  4. Step 4: Simplify right side
    121,619.28x = 11,974,391,282.45
  5. Step 5: Solve for x
    x = 11,974,391,282.45/121,619.28
  6. Step 6: Final answer
    x = 98,458.00

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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.