Home / 120,803.24-181,205-45,905.78

Finding the Fourth Proportional to 120,803.24, 181,205 and 45,905.78

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Solution

The fourth proportional to 120,803.24, 181,205 and 45,905.78 is: 68,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,803.24 : 181,205 = 45,905.78 : x
  2. Step 2: Convert to fraction form
    120,803.24/181,205 = 45,905.78/x
  3. Step 3: Cross multiply
    120,803.24x = 181,205 × 45,905.78
  4. Step 4: Simplify right side
    120,803.24x = 8,318,356,864.90
  5. Step 5: Solve for x
    x = 8,318,356,864.90/120,803.24
  6. Step 6: Final answer
    x = 68,858.72

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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.