Home / 103,540.20-155,456.10-64,174.20

Finding the Fourth Proportional to 103,540.20, 155,456.10 and 64,174.20

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Solution

The fourth proportional to 103,540.20, 155,456.10 and 64,174.20 is: 96,351.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,540.20 : 155,456.10 = 64,174.20 : x
  2. Step 2: Convert to fraction form
    103,540.20/155,456.10 = 64,174.20/x
  3. Step 3: Cross multiply
    103,540.20x = 155,456.10 × 64,174.20
  4. Step 4: Simplify right side
    103,540.20x = 9,976,270,852.62
  5. Step 5: Solve for x
    x = 9,976,270,852.62/103,540.20
  6. Step 6: Final answer
    x = 96,351.67

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1.5x scale

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.