Home / 200,177.78-276,089.31-128,564.47

Finding the Fourth Proportional to 200,177.78, 276,089.31 and 128,564.47

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Solution

The fourth proportional to 200,177.78, 276,089.31 and 128,564.47 is: 177,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,177.78 : 276,089.31 = 128,564.47 : x
  2. Step 2: Convert to fraction form
    200,177.78/276,089.31 = 128,564.47/x
  3. Step 3: Cross multiply
    200,177.78x = 276,089.31 × 128,564.47
  4. Step 4: Simplify right side
    200,177.78x = 35,495,274,604.93
  5. Step 5: Solve for x
    x = 35,495,274,604.93/200,177.78
  6. Step 6: Final answer
    x = 177,318.75

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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.