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Finding the Fourth Proportional to 147,699, 203,824.62 and 80,631

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Solution

The fourth proportional to 147,699, 203,824.62 and 80,631 is: 111,270.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,699 : 203,824.62 = 80,631 : x
  2. Step 2: Convert to fraction form
    147,699/203,824.62 = 80,631/x
  3. Step 3: Cross multiply
    147,699x = 203,824.62 × 80,631
  4. Step 4: Simplify right side
    147,699x = 16,434,582,935.22
  5. Step 5: Solve for x
    x = 16,434,582,935.22/147,699
  6. Step 6: Final answer
    x = 111,270.78

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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.