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Finding the Fourth Proportional to 169,892.60, 254,911.80 and 86,786.60

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Solution

The fourth proportional to 169,892.60, 254,911.80 and 86,786.60 is: 130,217.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,892.60 : 254,911.80 = 86,786.60 : x
  2. Step 2: Convert to fraction form
    169,892.60/254,911.80 = 86,786.60/x
  3. Step 3: Cross multiply
    169,892.60x = 254,911.80 × 86,786.60
  4. Step 4: Simplify right side
    169,892.60x = 22,122,928,421.88
  5. Step 5: Solve for x
    x = 22,122,928,421.88/169,892.60
  6. Step 6: Final answer
    x = 130,217.14

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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.