Home / 208,401.68-312,616.96-83,742.72

Finding the Fourth Proportional to 208,401.68, 312,616.96 and 83,742.72

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Solution

The fourth proportional to 208,401.68, 312,616.96 and 83,742.72 is: 125,619.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,401.68 : 312,616.96 = 83,742.72 : x
  2. Step 2: Convert to fraction form
    208,401.68/312,616.96 = 83,742.72/x
  3. Step 3: Cross multiply
    208,401.68x = 312,616.96 × 83,742.72
  4. Step 4: Simplify right side
    208,401.68x = 26,179,394,548.53
  5. Step 5: Solve for x
    x = 26,179,394,548.53/208,401.68
  6. Step 6: Final answer
    x = 125,619.88

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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.