Home / 133,286.78-183,938.38-72,855.74

Finding the Fourth Proportional to 133,286.78, 183,938.38 and 72,855.74

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Solution

The fourth proportional to 133,286.78, 183,938.38 and 72,855.74 is: 100,542.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,286.78 : 183,938.38 = 72,855.74 : x
  2. Step 2: Convert to fraction form
    133,286.78/183,938.38 = 72,855.74/x
  3. Step 3: Cross multiply
    133,286.78x = 183,938.38 × 72,855.74
  4. Step 4: Simplify right side
    133,286.78x = 13,400,966,789.30
  5. Step 5: Solve for x
    x = 13,400,966,789.30/133,286.78
  6. Step 6: Final answer
    x = 100,542.36

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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.