Home / 120,977.42-181,331.67-91,299.02

Finding the Fourth Proportional to 120,977.42, 181,331.67 and 91,299.02

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Solution

The fourth proportional to 120,977.42, 181,331.67 and 91,299.02 is: 136,847.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,977.42 : 181,331.67 = 91,299.02 : x
  2. Step 2: Convert to fraction form
    120,977.42/181,331.67 = 91,299.02/x
  3. Step 3: Cross multiply
    120,977.42x = 181,331.67 × 91,299.02
  4. Step 4: Simplify right side
    120,977.42x = 16,555,403,765.96
  5. Step 5: Solve for x
    x = 16,555,403,765.96/120,977.42
  6. Step 6: Final answer
    x = 136,847.06

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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.