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Finding the Fourth Proportional to 122,511.60, 169,059.96 and 68,798.88

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Solution

The fourth proportional to 122,511.60, 169,059.96 and 68,798.88 is: 94,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,511.60 : 169,059.96 = 68,798.88 : x
  2. Step 2: Convert to fraction form
    122,511.60/169,059.96 = 68,798.88/x
  3. Step 3: Cross multiply
    122,511.60x = 169,059.96 × 68,798.88
  4. Step 4: Simplify right side
    122,511.60x = 11,631,135,900.84
  5. Step 5: Solve for x
    x = 11,631,135,900.84/122,511.60
  6. Step 6: Final answer
    x = 94,939.06

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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.