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Finding the Fourth Proportional to 147,363.45, 203,361.56 and 80,295.45

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Solution

The fourth proportional to 147,363.45, 203,361.56 and 80,295.45 is: 110,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,363.45 : 203,361.56 = 80,295.45 : x
  2. Step 2: Convert to fraction form
    147,363.45/203,361.56 = 80,295.45/x
  3. Step 3: Cross multiply
    147,363.45x = 203,361.56 × 80,295.45
  4. Step 4: Simplify right side
    147,363.45x = 16,329,007,972.90
  5. Step 5: Solve for x
    x = 16,329,007,972.90/147,363.45
  6. Step 6: Final answer
    x = 110,807.72

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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.