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Finding the Fourth Proportional to 147,321.28, 203,303.40 and 80,253.28

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Solution

The fourth proportional to 147,321.28, 203,303.40 and 80,253.28 is: 110,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,321.28 : 203,303.40 = 80,253.28 : x
  2. Step 2: Convert to fraction form
    147,321.28/203,303.40 = 80,253.28/x
  3. Step 3: Cross multiply
    147,321.28x = 203,303.40 × 80,253.28
  4. Step 4: Simplify right side
    147,321.28x = 16,315,764,685.15
  5. Step 5: Solve for x
    x = 16,315,764,685.15/147,321.28
  6. Step 6: Final answer
    x = 110,749.54

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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.