Home / 121,208.20-167,256.18-89,394.60

Finding the Fourth Proportional to 121,208.20, 167,256.18 and 89,394.60

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Solution

The fourth proportional to 121,208.20, 167,256.18 and 89,394.60 is: 123,356.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,208.20 : 167,256.18 = 89,394.60 : x
  2. Step 2: Convert to fraction form
    121,208.20/167,256.18 = 89,394.60/x
  3. Step 3: Cross multiply
    121,208.20x = 167,256.18 × 89,394.60
  4. Step 4: Simplify right side
    121,208.20x = 14,951,799,308.63
  5. Step 5: Solve for x
    x = 14,951,799,308.63/121,208.20
  6. Step 6: Final answer
    x = 123,356.33

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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.