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Finding the Fourth Proportional to 107,455.70, 161,215.74 and 43,380.85

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Solution

The fourth proportional to 107,455.70, 161,215.74 and 43,380.85 is: 65,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,455.70 : 161,215.74 = 43,380.85 : x
  2. Step 2: Convert to fraction form
    107,455.70/161,215.74 = 43,380.85/x
  3. Step 3: Cross multiply
    107,455.70x = 161,215.74 × 43,380.85
  4. Step 4: Simplify right side
    107,455.70x = 6,993,675,834.58
  5. Step 5: Solve for x
    x = 6,993,675,834.58/107,455.70
  6. Step 6: Final answer
    x = 65,084.27

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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.