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Finding the Fourth Proportional to 121,187.92, 167,238.94 and 67,471.54

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Solution

The fourth proportional to 121,187.92, 167,238.94 and 67,471.54 is: 93,110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,187.92 : 167,238.94 = 67,471.54 : x
  2. Step 2: Convert to fraction form
    121,187.92/167,238.94 = 67,471.54/x
  3. Step 3: Cross multiply
    121,187.92x = 167,238.94 × 67,471.54
  4. Step 4: Simplify right side
    121,187.92x = 11,283,868,829.77
  5. Step 5: Solve for x
    x = 11,283,868,829.77/121,187.92
  6. Step 6: Final answer
    x = 93,110.51

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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.