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Finding the Fourth Proportional to 147,765.94, 203,921.89 and 80,697.94

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Solution

The fourth proportional to 147,765.94, 203,921.89 and 80,697.94 is: 111,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,765.94 : 203,921.89 = 80,697.94 : x
  2. Step 2: Convert to fraction form
    147,765.94/203,921.89 = 80,697.94/x
  3. Step 3: Cross multiply
    147,765.94x = 203,921.89 × 80,697.94
  4. Step 4: Simplify right side
    147,765.94x = 16,456,075,732.36
  5. Step 5: Solve for x
    x = 16,456,075,732.36/147,765.94
  6. Step 6: Final answer
    x = 111,365.83

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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.