Home / 121,069.54-167,081.38-100,892.66

Finding the Fourth Proportional to 121,069.54, 167,081.38 and 100,892.66

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Solution

The fourth proportional to 121,069.54, 167,081.38 and 100,892.66 is: 139,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,069.54 : 167,081.38 = 100,892.66 : x
  2. Step 2: Convert to fraction form
    121,069.54/167,081.38 = 100,892.66/x
  3. Step 3: Cross multiply
    121,069.54x = 167,081.38 × 100,892.66
  4. Step 4: Simplify right side
    121,069.54x = 16,857,284,864.67
  5. Step 5: Solve for x
    x = 16,857,284,864.67/121,069.54
  6. Step 6: Final answer
    x = 139,236.38

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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.