Home / 120,840.26-180,984.29-57,704.61

Finding the Fourth Proportional to 120,840.26, 180,984.29 and 57,704.61

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Solution

The fourth proportional to 120,840.26, 180,984.29 and 57,704.61 is: 86,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,840.26 : 180,984.29 = 57,704.61 : x
  2. Step 2: Convert to fraction form
    120,840.26/180,984.29 = 57,704.61/x
  3. Step 3: Cross multiply
    120,840.26x = 180,984.29 × 57,704.61
  4. Step 4: Simplify right side
    120,840.26x = 10,443,627,582.05
  5. Step 5: Solve for x
    x = 10,443,627,582.05/120,840.26
  6. Step 6: Final answer
    x = 86,425.07

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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.