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Finding the Fourth Proportional to 136,363.50, 188,182.44 and 76,747.50

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Solution

The fourth proportional to 136,363.50, 188,182.44 and 76,747.50 is: 105,912.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,363.50 : 188,182.44 = 76,747.50 : x
  2. Step 2: Convert to fraction form
    136,363.50/188,182.44 = 76,747.50/x
  3. Step 3: Cross multiply
    136,363.50x = 188,182.44 × 76,747.50
  4. Step 4: Simplify right side
    136,363.50x = 14,442,531,813.90
  5. Step 5: Solve for x
    x = 14,442,531,813.90/136,363.50
  6. Step 6: Final answer
    x = 105,912.01

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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.