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Finding the Fourth Proportional to 136,653.40, 188,581.89 and 76,227.94

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Solution

The fourth proportional to 136,653.40, 188,581.89 and 76,227.94 is: 105,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,653.40 : 188,581.89 = 76,227.94 : x
  2. Step 2: Convert to fraction form
    136,653.40/188,581.89 = 76,227.94/x
  3. Step 3: Cross multiply
    136,653.40x = 188,581.89 × 76,227.94
  4. Step 4: Simplify right side
    136,653.40x = 14,375,208,996.01
  5. Step 5: Solve for x
    x = 14,375,208,996.01/136,653.40
  6. Step 6: Final answer
    x = 105,194.67

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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.