Home / 103,815.12-155,716.20-41,440.80

Finding the Fourth Proportional to 103,815.12, 155,716.20 and 41,440.80

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Solution

The fourth proportional to 103,815.12, 155,716.20 and 41,440.80 is: 62,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,815.12 : 155,716.20 = 41,440.80 : x
  2. Step 2: Convert to fraction form
    103,815.12/155,716.20 = 41,440.80/x
  3. Step 3: Cross multiply
    103,815.12x = 155,716.20 × 41,440.80
  4. Step 4: Simplify right side
    103,815.12x = 6,453,003,900.96
  5. Step 5: Solve for x
    x = 6,453,003,900.96/103,815.12
  6. Step 6: Final answer
    x = 62,158.61

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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.