Home / 138,747.40-208,121.10-50,003.80

Finding the Fourth Proportional to 138,747.40, 208,121.10 and 50,003.80

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Solution

The fourth proportional to 138,747.40, 208,121.10 and 50,003.80 is: 75,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,747.40 : 208,121.10 = 50,003.80 : x
  2. Step 2: Convert to fraction form
    138,747.40/208,121.10 = 50,003.80/x
  3. Step 3: Cross multiply
    138,747.40x = 208,121.10 × 50,003.80
  4. Step 4: Simplify right side
    138,747.40x = 10,406,845,860.18
  5. Step 5: Solve for x
    x = 10,406,845,860.18/138,747.40
  6. Step 6: Final answer
    x = 75,005.70

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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.