Home / 122,231.25-168,688.85-71,939.97

Finding the Fourth Proportional to 122,231.25, 168,688.85 and 71,939.97

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Solution

The fourth proportional to 122,231.25, 168,688.85 and 71,939.97 is: 99,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,231.25 : 168,688.85 = 71,939.97 : x
  2. Step 2: Convert to fraction form
    122,231.25/168,688.85 = 71,939.97/x
  3. Step 3: Cross multiply
    122,231.25x = 168,688.85 × 71,939.97
  4. Step 4: Simplify right side
    122,231.25x = 12,135,470,448.63
  5. Step 5: Solve for x
    x = 12,135,470,448.63/122,231.25
  6. Step 6: Final answer
    x = 99,282.88

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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.