Home / 107,855.12-149,109.09-80,950.92

Finding the Fourth Proportional to 107,855.12, 149,109.09 and 80,950.92

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Solution

The fourth proportional to 107,855.12, 149,109.09 and 80,950.92 is: 111,914.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,855.12 : 149,109.09 = 80,950.92 : x
  2. Step 2: Convert to fraction form
    107,855.12/149,109.09 = 80,950.92/x
  3. Step 3: Cross multiply
    107,855.12x = 149,109.09 × 80,950.92
  4. Step 4: Simplify right side
    107,855.12x = 12,070,518,255.53
  5. Step 5: Solve for x
    x = 12,070,518,255.53/107,855.12
  6. Step 6: Final answer
    x = 111,914.19

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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.