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Finding the Fourth Proportional to 147,672.56, 203,788.15 and 80,604.56

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Solution

The fourth proportional to 147,672.56, 203,788.15 and 80,604.56 is: 111,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,672.56 : 203,788.15 = 80,604.56 : x
  2. Step 2: Convert to fraction form
    147,672.56/203,788.15 = 80,604.56/x
  3. Step 3: Cross multiply
    147,672.56x = 203,788.15 × 80,604.56
  4. Step 4: Simplify right side
    147,672.56x = 16,426,254,471.92
  5. Step 5: Solve for x
    x = 16,426,254,471.92/147,672.56
  6. Step 6: Final answer
    x = 111,234.30

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1.5x scale

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.