Home / 291,151.11-436,721.79-131,138.04

Finding the Fourth Proportional to 291,151.11, 436,721.79 and 131,138.04

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Solution

The fourth proportional to 291,151.11, 436,721.79 and 131,138.04 is: 196,704.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,151.11 : 436,721.79 = 131,138.04 : x
  2. Step 2: Convert to fraction form
    291,151.11/436,721.79 = 131,138.04/x
  3. Step 3: Cross multiply
    291,151.11x = 436,721.79 × 131,138.04
  4. Step 4: Simplify right side
    291,151.11x = 57,270,839,565.89
  5. Step 5: Solve for x
    x = 57,270,839,565.89/291,151.11
  6. Step 6: Final answer
    x = 196,704.86

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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.