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Finding the Fourth Proportional to 122,186.45, 168,614.52 and 71,196

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Solution

The fourth proportional to 122,186.45, 168,614.52 and 71,196 is: 98,248.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,186.45 : 168,614.52 = 71,196 : x
  2. Step 2: Convert to fraction form
    122,186.45/168,614.52 = 71,196/x
  3. Step 3: Cross multiply
    122,186.45x = 168,614.52 × 71,196
  4. Step 4: Simplify right side
    122,186.45x = 12,004,679,365.92
  5. Step 5: Solve for x
    x = 12,004,679,365.92/122,186.45
  6. Step 6: Final answer
    x = 98,248.86

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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.