Home / 103,971.91-155,849.32-75,439.93

Finding the Fourth Proportional to 103,971.91, 155,849.32 and 75,439.93

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Solution

The fourth proportional to 103,971.91, 155,849.32 and 75,439.93 is: 113,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,971.91 : 155,849.32 = 75,439.93 : x
  2. Step 2: Convert to fraction form
    103,971.91/155,849.32 = 75,439.93/x
  3. Step 3: Cross multiply
    103,971.91x = 155,849.32 × 75,439.93
  4. Step 4: Simplify right side
    103,971.91x = 11,757,261,791.35
  5. Step 5: Solve for x
    x = 11,757,261,791.35/103,971.91
  6. Step 6: Final answer
    x = 113,081.14

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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.