Home / 121,112.70-167,182.02-90,985.41

Finding the Fourth Proportional to 121,112.70, 167,182.02 and 90,985.41

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Solution

The fourth proportional to 121,112.70, 167,182.02 and 90,985.41 is: 125,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,112.70 : 167,182.02 = 90,985.41 : x
  2. Step 2: Convert to fraction form
    121,112.70/167,182.02 = 90,985.41/x
  3. Step 3: Cross multiply
    121,112.70x = 167,182.02 × 90,985.41
  4. Step 4: Simplify right side
    121,112.70x = 15,211,124,634.33
  5. Step 5: Solve for x
    x = 15,211,124,634.33/121,112.70
  6. Step 6: Final answer
    x = 125,594.79

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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.