Home / 120,489.64-180,796.43-57,381.33

Finding the Fourth Proportional to 120,489.64, 180,796.43 and 57,381.33

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Solution

The fourth proportional to 120,489.64, 180,796.43 and 57,381.33 is: 86,101.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,489.64 : 180,796.43 = 57,381.33 : x
  2. Step 2: Convert to fraction form
    120,489.64/180,796.43 = 57,381.33/x
  3. Step 3: Cross multiply
    120,489.64x = 180,796.43 × 57,381.33
  4. Step 4: Simplify right side
    120,489.64x = 10,374,339,612.65
  5. Step 5: Solve for x
    x = 10,374,339,612.65/120,489.64
  6. Step 6: Final answer
    x = 86,101.51

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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.