Home / 128,789.46-193,048.92-69,609.24

Finding the Fourth Proportional to 128,789.46, 193,048.92 and 69,609.24

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Solution

The fourth proportional to 128,789.46, 193,048.92 and 69,609.24 is: 104,340.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,789.46 : 193,048.92 = 69,609.24 : x
  2. Step 2: Convert to fraction form
    128,789.46/193,048.92 = 69,609.24/x
  3. Step 3: Cross multiply
    128,789.46x = 193,048.92 × 69,609.24
  4. Step 4: Simplify right side
    128,789.46x = 13,437,988,604.02
  5. Step 5: Solve for x
    x = 13,437,988,604.02/128,789.46
  6. Step 6: Final answer
    x = 104,340.75

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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.