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Finding the Fourth Proportional to 147,791, 203,951.58 and 80,723

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Solution

The fourth proportional to 147,791, 203,951.58 and 80,723 is: 111,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,791 : 203,951.58 = 80,723 : x
  2. Step 2: Convert to fraction form
    147,791/203,951.58 = 80,723/x
  3. Step 3: Cross multiply
    147,791x = 203,951.58 × 80,723
  4. Step 4: Simplify right side
    147,791x = 16,463,583,392.34
  5. Step 5: Solve for x
    x = 16,463,583,392.34/147,791
  6. Step 6: Final answer
    x = 111,397.74

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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.