Home / 131,268.58-181,147.61-80,281.87

Finding the Fourth Proportional to 131,268.58, 181,147.61 and 80,281.87

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Solution

The fourth proportional to 131,268.58, 181,147.61 and 80,281.87 is: 110,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,268.58 : 181,147.61 = 80,281.87 : x
  2. Step 2: Convert to fraction form
    131,268.58/181,147.61 = 80,281.87/x
  3. Step 3: Cross multiply
    131,268.58x = 181,147.61 × 80,281.87
  4. Step 4: Simplify right side
    131,268.58x = 14,542,868,624.67
  5. Step 5: Solve for x
    x = 14,542,868,624.67/131,268.58
  6. Step 6: Final answer
    x = 110,787.13

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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.