Home / 109,105.83-150,534.99-65,480.66

Finding the Fourth Proportional to 109,105.83, 150,534.99 and 65,480.66

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Solution

The fourth proportional to 109,105.83, 150,534.99 and 65,480.66 is: 90,344.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,105.83 : 150,534.99 = 65,480.66 : x
  2. Step 2: Convert to fraction form
    109,105.83/150,534.99 = 65,480.66/x
  3. Step 3: Cross multiply
    109,105.83x = 150,534.99 × 65,480.66
  4. Step 4: Simplify right side
    109,105.83x = 9,857,129,745.62
  5. Step 5: Solve for x
    x = 9,857,129,745.62/109,105.83
  6. Step 6: Final answer
    x = 90,344.67

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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.