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Finding the Fourth Proportional to 250,085.81, 345,118.44 and 136,908.56

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Solution

The fourth proportional to 250,085.81, 345,118.44 and 136,908.56 is: 188,933.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,085.81 : 345,118.44 = 136,908.56 : x
  2. Step 2: Convert to fraction form
    250,085.81/345,118.44 = 136,908.56/x
  3. Step 3: Cross multiply
    250,085.81x = 345,118.44 × 136,908.56
  4. Step 4: Simplify right side
    250,085.81x = 47,249,669,255.94
  5. Step 5: Solve for x
    x = 47,249,669,255.94/250,085.81
  6. Step 6: Final answer
    x = 188,933.83

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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.