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Finding the Fourth Proportional to 169,977.60, 255,039.30 and 86,871.60

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Solution

The fourth proportional to 169,977.60, 255,039.30 and 86,871.60 is: 130,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,977.60 : 255,039.30 = 86,871.60 : x
  2. Step 2: Convert to fraction form
    169,977.60/255,039.30 = 86,871.60/x
  3. Step 3: Cross multiply
    169,977.60x = 255,039.30 × 86,871.60
  4. Step 4: Simplify right side
    169,977.60x = 22,155,672,053.88
  5. Step 5: Solve for x
    x = 22,155,672,053.88/169,977.60
  6. Step 6: Final answer
    x = 130,344.66

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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.