Home / 208,988.14-313,383.38-80,964.40

Finding the Fourth Proportional to 208,988.14, 313,383.38 and 80,964.40

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Solution

The fourth proportional to 208,988.14, 313,383.38 and 80,964.40 is: 121,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,988.14 : 313,383.38 = 80,964.40 : x
  2. Step 2: Convert to fraction form
    208,988.14/313,383.38 = 80,964.40/x
  3. Step 3: Cross multiply
    208,988.14x = 313,383.38 × 80,964.40
  4. Step 4: Simplify right side
    208,988.14x = 25,372,897,331.67
  5. Step 5: Solve for x
    x = 25,372,897,331.67/208,988.14
  6. Step 6: Final answer
    x = 121,408.31

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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.