Home / 80,142.40-110,556.04-74,443.48

Finding the Fourth Proportional to 80,142.40, 110,556.04 and 74,443.48

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Solution

The fourth proportional to 80,142.40, 110,556.04 and 74,443.48 is: 102,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,142.40 : 110,556.04 = 74,443.48 : x
  2. Step 2: Convert to fraction form
    80,142.40/110,556.04 = 74,443.48/x
  3. Step 3: Cross multiply
    80,142.40x = 110,556.04 × 74,443.48
  4. Step 4: Simplify right side
    80,142.40x = 8,230,176,352.62
  5. Step 5: Solve for x
    x = 8,230,176,352.62/80,142.40
  6. Step 6: Final answer
    x = 102,694.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.