Home / 125,855.30-188,588.55-109,136.90

Finding the Fourth Proportional to 125,855.30, 188,588.55 and 109,136.90

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Solution

The fourth proportional to 125,855.30, 188,588.55 and 109,136.90 is: 163,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,855.30 : 188,588.55 = 109,136.90 : x
  2. Step 2: Convert to fraction form
    125,855.30/188,588.55 = 109,136.90/x
  3. Step 3: Cross multiply
    125,855.30x = 188,588.55 × 109,136.90
  4. Step 4: Simplify right side
    125,855.30x = 20,581,969,722.50
  5. Step 5: Solve for x
    x = 20,581,969,722.50/125,855.30
  6. Step 6: Final answer
    x = 163,536.77

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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.