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Finding the Fourth Proportional to 125,910.40, 188,865.60 and 112,132.30

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Solution

The fourth proportional to 125,910.40, 188,865.60 and 112,132.30 is: 168,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,910.40 : 188,865.60 = 112,132.30 : x
  2. Step 2: Convert to fraction form
    125,910.40/188,865.60 = 112,132.30/x
  3. Step 3: Cross multiply
    125,910.40x = 188,865.60 × 112,132.30
  4. Step 4: Simplify right side
    125,910.40x = 21,177,934,118.88
  5. Step 5: Solve for x
    x = 21,177,934,118.88/125,910.40
  6. Step 6: Final answer
    x = 168,198.45

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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.