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Finding the Fourth Proportional to 119,847.60, 179,965.80 and 86,799.60

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Solution

The fourth proportional to 119,847.60, 179,965.80 and 86,799.60 is: 130,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,847.60 : 179,965.80 = 86,799.60 : x
  2. Step 2: Convert to fraction form
    119,847.60/179,965.80 = 86,799.60/x
  3. Step 3: Cross multiply
    119,847.60x = 179,965.80 × 86,799.60
  4. Step 4: Simplify right side
    119,847.60x = 15,620,959,453.68
  5. Step 5: Solve for x
    x = 15,620,959,453.68/119,847.60
  6. Step 6: Final answer
    x = 130,340.19

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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.