Home / 148,947.21-205,548.03-80,964.72

Finding the Fourth Proportional to 148,947.21, 205,548.03 and 80,964.72

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Solution

The fourth proportional to 148,947.21, 205,548.03 and 80,964.72 is: 111,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,947.21 : 205,548.03 = 80,964.72 : x
  2. Step 2: Convert to fraction form
    148,947.21/205,548.03 = 80,964.72/x
  3. Step 3: Cross multiply
    148,947.21x = 205,548.03 × 80,964.72
  4. Step 4: Simplify right side
    148,947.21x = 16,642,138,695.50
  5. Step 5: Solve for x
    x = 16,642,138,695.50/148,947.21
  6. Step 6: Final answer
    x = 111,731.79

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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.