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Finding the Fourth Proportional to 122,307.06, 168,784.05 and 71,354.82

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Solution

The fourth proportional to 122,307.06, 168,784.05 and 71,354.82 is: 98,469.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,307.06 : 168,784.05 = 71,354.82 : x
  2. Step 2: Convert to fraction form
    122,307.06/168,784.05 = 71,354.82/x
  3. Step 3: Cross multiply
    122,307.06x = 168,784.05 × 71,354.82
  4. Step 4: Simplify right side
    122,307.06x = 12,043,555,506.62
  5. Step 5: Solve for x
    x = 12,043,555,506.62/122,307.06
  6. Step 6: Final answer
    x = 98,469.83

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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.