Home / 209,191.52-313,688.72-75,977.84

Finding the Fourth Proportional to 209,191.52, 313,688.72 and 75,977.84

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Solution

The fourth proportional to 209,191.52, 313,688.72 and 75,977.84 is: 113,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,191.52 : 313,688.72 = 75,977.84 : x
  2. Step 2: Convert to fraction form
    209,191.52/313,688.72 = 75,977.84/x
  3. Step 3: Cross multiply
    209,191.52x = 313,688.72 × 75,977.84
  4. Step 4: Simplify right side
    209,191.52x = 23,833,391,377.96
  5. Step 5: Solve for x
    x = 23,833,391,377.96/209,191.52
  6. Step 6: Final answer
    x = 113,930.96

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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.