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Finding the Fourth Proportional to 122,631.15, 169,230.10 and 68,915.01

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Solution

The fourth proportional to 122,631.15, 169,230.10 and 68,915.01 is: 95,102.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,631.15 : 169,230.10 = 68,915.01 : x
  2. Step 2: Convert to fraction form
    122,631.15/169,230.10 = 68,915.01/x
  3. Step 3: Cross multiply
    122,631.15x = 169,230.10 × 68,915.01
  4. Step 4: Simplify right side
    122,631.15x = 11,662,494,033.80
  5. Step 5: Solve for x
    x = 11,662,494,033.80/122,631.15
  6. Step 6: Final answer
    x = 95,102.22

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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.