Home / 125,999.28-188,868.24-66,819.60

Finding the Fourth Proportional to 125,999.28, 188,868.24 and 66,819.60

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Solution

The fourth proportional to 125,999.28, 188,868.24 and 66,819.60 is: 100,160.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,999.28 : 188,868.24 = 66,819.60 : x
  2. Step 2: Convert to fraction form
    125,999.28/188,868.24 = 66,819.60/x
  3. Step 3: Cross multiply
    125,999.28x = 188,868.24 × 66,819.60
  4. Step 4: Simplify right side
    125,999.28x = 12,620,100,249.50
  5. Step 5: Solve for x
    x = 12,620,100,249.50/125,999.28
  6. Step 6: Final answer
    x = 100,160.10

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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.