Home / 115,149.87-158,941.04-72,736.65

Finding the Fourth Proportional to 115,149.87, 158,941.04 and 72,736.65

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Solution

The fourth proportional to 115,149.87, 158,941.04 and 72,736.65 is: 100,398.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,149.87 : 158,941.04 = 72,736.65 : x
  2. Step 2: Convert to fraction form
    115,149.87/158,941.04 = 72,736.65/x
  3. Step 3: Cross multiply
    115,149.87x = 158,941.04 × 72,736.65
  4. Step 4: Simplify right side
    115,149.87x = 11,560,838,433.43
  5. Step 5: Solve for x
    x = 11,560,838,433.43/115,149.87
  6. Step 6: Final answer
    x = 100,398.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.