Home / 100,834.62-139,149.32-55,512.24

Finding the Fourth Proportional to 100,834.62, 139,149.32 and 55,512.24

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Solution

The fourth proportional to 100,834.62, 139,149.32 and 55,512.24 is: 76,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,834.62 : 139,149.32 = 55,512.24 : x
  2. Step 2: Convert to fraction form
    100,834.62/139,149.32 = 55,512.24/x
  3. Step 3: Cross multiply
    100,834.62x = 139,149.32 × 55,512.24
  4. Step 4: Simplify right side
    100,834.62x = 7,724,490,447.68
  5. Step 5: Solve for x
    x = 7,724,490,447.68/100,834.62
  6. Step 6: Final answer
    x = 76,605.54

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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.