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Finding the Fourth Proportional to 122,479.59, 169,008.75 and 68,770.50

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Solution

The fourth proportional to 122,479.59, 169,008.75 and 68,770.50 is: 94,895.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,479.59 : 169,008.75 = 68,770.50 : x
  2. Step 2: Convert to fraction form
    122,479.59/169,008.75 = 68,770.50/x
  3. Step 3: Cross multiply
    122,479.59x = 169,008.75 × 68,770.50
  4. Step 4: Simplify right side
    122,479.59x = 11,622,816,241.88
  5. Step 5: Solve for x
    x = 11,622,816,241.88/122,479.59
  6. Step 6: Final answer
    x = 94,895.94

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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.