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Finding the Fourth Proportional to 121,965.60, 182,948.40 and 120,799.20

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Solution

The fourth proportional to 121,965.60, 182,948.40 and 120,799.20 is: 181,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,965.60 : 182,948.40 = 120,799.20 : x
  2. Step 2: Convert to fraction form
    121,965.60/182,948.40 = 120,799.20/x
  3. Step 3: Cross multiply
    121,965.60x = 182,948.40 × 120,799.20
  4. Step 4: Simplify right side
    121,965.60x = 22,100,020,361.28
  5. Step 5: Solve for x
    x = 22,100,020,361.28/121,965.60
  6. Step 6: Final answer
    x = 181,198.80

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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.