Home / 138,727.80-208,091.70-49,984.20

Finding the Fourth Proportional to 138,727.80, 208,091.70 and 49,984.20

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Solution

The fourth proportional to 138,727.80, 208,091.70 and 49,984.20 is: 74,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,727.80 : 208,091.70 = 49,984.20 : x
  2. Step 2: Convert to fraction form
    138,727.80/208,091.70 = 49,984.20/x
  3. Step 3: Cross multiply
    138,727.80x = 208,091.70 × 49,984.20
  4. Step 4: Simplify right side
    138,727.80x = 10,401,297,151.14
  5. Step 5: Solve for x
    x = 10,401,297,151.14/138,727.80
  6. Step 6: Final answer
    x = 74,976.30

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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.