Home / 120,379.12-180,564.60-57,229.52

Finding the Fourth Proportional to 120,379.12, 180,564.60 and 57,229.52

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Solution

The fourth proportional to 120,379.12, 180,564.60 and 57,229.52 is: 85,842.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,379.12 : 180,564.60 = 57,229.52 : x
  2. Step 2: Convert to fraction form
    120,379.12/180,564.60 = 57,229.52/x
  3. Step 3: Cross multiply
    120,379.12x = 180,564.60 × 57,229.52
  4. Step 4: Simplify right side
    120,379.12x = 10,333,625,386.99
  5. Step 5: Solve for x
    x = 10,333,625,386.99/120,379.12
  6. Step 6: Final answer
    x = 85,842.34

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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.