Home / 120,005.28-179,905.84-73,290.96

Finding the Fourth Proportional to 120,005.28, 179,905.84 and 73,290.96

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Solution

The fourth proportional to 120,005.28, 179,905.84 and 73,290.96 is: 109,874.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.28 : 179,905.84 = 73,290.96 : x
  2. Step 2: Convert to fraction form
    120,005.28/179,905.84 = 73,290.96/x
  3. Step 3: Cross multiply
    120,005.28x = 179,905.84 × 73,290.96
  4. Step 4: Simplify right side
    120,005.28x = 13,185,471,723.21
  5. Step 5: Solve for x
    x = 13,185,471,723.21/120,005.28
  6. Step 6: Final answer
    x = 109,874.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.