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Finding the Fourth Proportional to 121,718.52, 167,965.56 and 67,992.84

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Solution

The fourth proportional to 121,718.52, 167,965.56 and 67,992.84 is: 93,826.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,718.52 : 167,965.56 = 67,992.84 : x
  2. Step 2: Convert to fraction form
    121,718.52/167,965.56 = 67,992.84/x
  3. Step 3: Cross multiply
    121,718.52x = 167,965.56 × 67,992.84
  4. Step 4: Simplify right side
    121,718.52x = 11,420,455,446.59
  5. Step 5: Solve for x
    x = 11,420,455,446.59/121,718.52
  6. Step 6: Final answer
    x = 93,826.77

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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.