Home / 122,438.12-168,951.61-68,729.04

Finding the Fourth Proportional to 122,438.12, 168,951.61 and 68,729.04

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Solution

The fourth proportional to 122,438.12, 168,951.61 and 68,729.04 is: 94,838.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,438.12 : 168,951.61 = 68,729.04 : x
  2. Step 2: Convert to fraction form
    122,438.12/168,951.61 = 68,729.04/x
  3. Step 3: Cross multiply
    122,438.12x = 168,951.61 × 68,729.04
  4. Step 4: Simplify right side
    122,438.12x = 11,611,881,961.75
  5. Step 5: Solve for x
    x = 11,611,881,961.75/122,438.12
  6. Step 6: Final answer
    x = 94,838.78

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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.