Home / 120,003.20-179,860.80-49,846.40

Finding the Fourth Proportional to 120,003.20, 179,860.80 and 49,846.40

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Solution

The fourth proportional to 120,003.20, 179,860.80 and 49,846.40 is: 74,709.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,003.20 : 179,860.80 = 49,846.40 : x
  2. Step 2: Convert to fraction form
    120,003.20/179,860.80 = 49,846.40/x
  3. Step 3: Cross multiply
    120,003.20x = 179,860.80 × 49,846.40
  4. Step 4: Simplify right side
    120,003.20x = 8,965,413,381.12
  5. Step 5: Solve for x
    x = 8,965,413,381.12/120,003.20
  6. Step 6: Final answer
    x = 74,709.79

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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.