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Finding the Fourth Proportional to 131,806.70, 181,896.30 and 75,223.34

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Solution

The fourth proportional to 131,806.70, 181,896.30 and 75,223.34 is: 103,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,806.70 : 181,896.30 = 75,223.34 : x
  2. Step 2: Convert to fraction form
    131,806.70/181,896.30 = 75,223.34/x
  3. Step 3: Cross multiply
    131,806.70x = 181,896.30 × 75,223.34
  4. Step 4: Simplify right side
    131,806.70x = 13,682,847,219.64
  5. Step 5: Solve for x
    x = 13,682,847,219.64/131,806.70
  6. Step 6: Final answer
    x = 103,809.95

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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.