Home / 201,972.90-302,813.55-131,891.70

Finding the Fourth Proportional to 201,972.90, 302,813.55 and 131,891.70

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Solution

The fourth proportional to 201,972.90, 302,813.55 and 131,891.70 is: 197,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,972.90 : 302,813.55 = 131,891.70 : x
  2. Step 2: Convert to fraction form
    201,972.90/302,813.55 = 131,891.70/x
  3. Step 3: Cross multiply
    201,972.90x = 302,813.55 × 131,891.70
  4. Step 4: Simplify right side
    201,972.90x = 39,938,593,892.54
  5. Step 5: Solve for x
    x = 39,938,593,892.54/201,972.90
  6. Step 6: Final answer
    x = 197,742.34

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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.