Home / 138,755.05-208,005-49,986.85

Finding the Fourth Proportional to 138,755.05, 208,005 and 49,986.85

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Solution

The fourth proportional to 138,755.05, 208,005 and 49,986.85 is: 74,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,755.05 : 208,005 = 49,986.85 : x
  2. Step 2: Convert to fraction form
    138,755.05/208,005 = 49,986.85/x
  3. Step 3: Cross multiply
    138,755.05x = 208,005 × 49,986.85
  4. Step 4: Simplify right side
    138,755.05x = 10,397,513,694.23
  5. Step 5: Solve for x
    x = 10,397,513,694.23/138,755.05
  6. Step 6: Final answer
    x = 74,934.31

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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.