Home / 128,576.64-177,397.38-83,182.73

Finding the Fourth Proportional to 128,576.64, 177,397.38 and 83,182.73

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Solution

The fourth proportional to 128,576.64, 177,397.38 and 83,182.73 is: 114,767.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,576.64 : 177,397.38 = 83,182.73 : x
  2. Step 2: Convert to fraction form
    128,576.64/177,397.38 = 83,182.73/x
  3. Step 3: Cross multiply
    128,576.64x = 177,397.38 × 83,182.73
  4. Step 4: Simplify right side
    128,576.64x = 14,756,397,476.26
  5. Step 5: Solve for x
    x = 14,756,397,476.26/128,576.64
  6. Step 6: Final answer
    x = 114,767.33

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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.