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Finding the Fourth Proportional to 169,892.10, 254,911.05 and 86,786.10

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Solution

The fourth proportional to 169,892.10, 254,911.05 and 86,786.10 is: 130,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,892.10 : 254,911.05 = 86,786.10 : x
  2. Step 2: Convert to fraction form
    169,892.10/254,911.05 = 86,786.10/x
  3. Step 3: Cross multiply
    169,892.10x = 254,911.05 × 86,786.10
  4. Step 4: Simplify right side
    169,892.10x = 22,122,735,876.41
  5. Step 5: Solve for x
    x = 22,122,735,876.41/169,892.10
  6. Step 6: Final answer
    x = 130,216.39

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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.