Home / 155,189.20-214,189-91,523.28

Finding the Fourth Proportional to 155,189.20, 214,189 and 91,523.28

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Solution

The fourth proportional to 155,189.20, 214,189 and 91,523.28 is: 126,318.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,189.20 : 214,189 = 91,523.28 : x
  2. Step 2: Convert to fraction form
    155,189.20/214,189 = 91,523.28/x
  3. Step 3: Cross multiply
    155,189.20x = 214,189 × 91,523.28
  4. Step 4: Simplify right side
    155,189.20x = 19,603,279,819.92
  5. Step 5: Solve for x
    x = 19,603,279,819.92/155,189.20
  6. Step 6: Final answer
    x = 126,318.58

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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.