Home / 121,620.28-167,863.98-71,335.48

Finding the Fourth Proportional to 121,620.28, 167,863.98 and 71,335.48

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Solution

The fourth proportional to 121,620.28, 167,863.98 and 71,335.48 is: 98,459.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,620.28 : 167,863.98 = 71,335.48 : x
  2. Step 2: Convert to fraction form
    121,620.28/167,863.98 = 71,335.48/x
  3. Step 3: Cross multiply
    121,620.28x = 167,863.98 × 71,335.48
  4. Step 4: Simplify right side
    121,620.28x = 11,974,657,588.01
  5. Step 5: Solve for x
    x = 11,974,657,588.01/121,620.28
  6. Step 6: Final answer
    x = 98,459.38

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1.5x scale

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.