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Finding the Fourth Proportional to 147,376.11, 203,378.99 and 80,308.11

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Solution

The fourth proportional to 147,376.11, 203,378.99 and 80,308.11 is: 110,825.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,376.11 : 203,378.99 = 80,308.11 : x
  2. Step 2: Convert to fraction form
    147,376.11/203,378.99 = 80,308.11/x
  3. Step 3: Cross multiply
    147,376.11x = 203,378.99 × 80,308.11
  4. Step 4: Simplify right side
    147,376.11x = 16,332,981,899.07
  5. Step 5: Solve for x
    x = 16,332,981,899.07/147,376.11
  6. Step 6: Final answer
    x = 110,825.17

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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.