Home / 120,135.72-180,028.62-57,733.32

Finding the Fourth Proportional to 120,135.72, 180,028.62 and 57,733.32

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Solution

The fourth proportional to 120,135.72, 180,028.62 and 57,733.32 is: 86,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,135.72 : 180,028.62 = 57,733.32 : x
  2. Step 2: Convert to fraction form
    120,135.72/180,028.62 = 57,733.32/x
  3. Step 3: Cross multiply
    120,135.72x = 180,028.62 × 57,733.32
  4. Step 4: Simplify right side
    120,135.72x = 10,393,649,927.62
  5. Step 5: Solve for x
    x = 10,393,649,927.62/120,135.72
  6. Step 6: Final answer
    x = 86,515.90

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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.