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Finding the Fourth Proportional to 122,441.25, 168,959.66 and 68,715.89

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Solution

The fourth proportional to 122,441.25, 168,959.66 and 68,715.89 is: 94,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,441.25 : 168,959.66 = 68,715.89 : x
  2. Step 2: Convert to fraction form
    122,441.25/168,959.66 = 68,715.89/x
  3. Step 3: Cross multiply
    122,441.25x = 168,959.66 × 68,715.89
  4. Step 4: Simplify right side
    122,441.25x = 11,610,213,489.82
  5. Step 5: Solve for x
    x = 11,610,213,489.82/122,441.25
  6. Step 6: Final answer
    x = 94,822.73

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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.