Home / 223,145.19-307,944.07-121,170.85

Finding the Fourth Proportional to 223,145.19, 307,944.07 and 121,170.85

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Solution

The fourth proportional to 223,145.19, 307,944.07 and 121,170.85 is: 167,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,145.19 : 307,944.07 = 121,170.85 : x
  2. Step 2: Convert to fraction form
    223,145.19/307,944.07 = 121,170.85/x
  3. Step 3: Cross multiply
    223,145.19x = 307,944.07 × 121,170.85
  4. Step 4: Simplify right side
    223,145.19x = 37,313,843,641.57
  5. Step 5: Solve for x
    x = 37,313,843,641.57/223,145.19
  6. Step 6: Final answer
    x = 167,217.78

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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.