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Finding the Fourth Proportional to 122,053.52, 168,434.28 and 68,340.88

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Solution

The fourth proportional to 122,053.52, 168,434.28 and 68,340.88 is: 94,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,053.52 : 168,434.28 = 68,340.88 : x
  2. Step 2: Convert to fraction form
    122,053.52/168,434.28 = 68,340.88/x
  3. Step 3: Cross multiply
    122,053.52x = 168,434.28 × 68,340.88
  4. Step 4: Simplify right side
    122,053.52x = 11,510,946,917.37
  5. Step 5: Solve for x
    x = 11,510,946,917.37/122,053.52
  6. Step 6: Final answer
    x = 94,310.65

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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.