Home / 78,138.15-117,218.40-24,107.41

Finding the Fourth Proportional to 78,138.15, 117,218.40 and 24,107.41

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Solution

The fourth proportional to 78,138.15, 117,218.40 and 24,107.41 is: 36,164.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,138.15 : 117,218.40 = 24,107.41 : x
  2. Step 2: Convert to fraction form
    78,138.15/117,218.40 = 24,107.41/x
  3. Step 3: Cross multiply
    78,138.15x = 117,218.40 × 24,107.41
  4. Step 4: Simplify right side
    78,138.15x = 2,825,832,028.34
  5. Step 5: Solve for x
    x = 2,825,832,028.34/78,138.15
  6. Step 6: Final answer
    x = 36,164.56

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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.