Home / 121,711.20-182,539.20-55,107.36

Finding the Fourth Proportional to 121,711.20, 182,539.20 and 55,107.36

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Solution

The fourth proportional to 121,711.20, 182,539.20 and 55,107.36 is: 82,648.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,711.20 : 182,539.20 = 55,107.36 : x
  2. Step 2: Convert to fraction form
    121,711.20/182,539.20 = 55,107.36/x
  3. Step 3: Cross multiply
    121,711.20x = 182,539.20 × 55,107.36
  4. Step 4: Simplify right side
    121,711.20x = 10,059,253,408.51
  5. Step 5: Solve for x
    x = 10,059,253,408.51/121,711.20
  6. Step 6: Final answer
    x = 82,648.54

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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.