Home / 225,686.32-311,440.33-123,709.54

Finding the Fourth Proportional to 225,686.32, 311,440.33 and 123,709.54

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Solution

The fourth proportional to 225,686.32, 311,440.33 and 123,709.54 is: 170,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,686.32 : 311,440.33 = 123,709.54 : x
  2. Step 2: Convert to fraction form
    225,686.32/311,440.33 = 123,709.54/x
  3. Step 3: Cross multiply
    225,686.32x = 311,440.33 × 123,709.54
  4. Step 4: Simplify right side
    225,686.32x = 38,528,139,961.75
  5. Step 5: Solve for x
    x = 38,528,139,961.75/225,686.32
  6. Step 6: Final answer
    x = 170,715.44

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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.