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Finding the Fourth Proportional to 169,917.44, 254,928 and 86,869.76

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Solution

The fourth proportional to 169,917.44, 254,928 and 86,869.76 is: 130,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,917.44 : 254,928 = 86,869.76 : x
  2. Step 2: Convert to fraction form
    169,917.44/254,928 = 86,869.76/x
  3. Step 3: Cross multiply
    169,917.44x = 254,928 × 86,869.76
  4. Step 4: Simplify right side
    169,917.44x = 22,145,534,177.28
  5. Step 5: Solve for x
    x = 22,145,534,177.28/169,917.44
  6. Step 6: Final answer
    x = 130,331.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.