Home / 125,539.20-188,107.20-66,297.60

Finding the Fourth Proportional to 125,539.20, 188,107.20 and 66,297.60

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Solution

The fourth proportional to 125,539.20, 188,107.20 and 66,297.60 is: 99,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,539.20 : 188,107.20 = 66,297.60 : x
  2. Step 2: Convert to fraction form
    125,539.20/188,107.20 = 66,297.60/x
  3. Step 3: Cross multiply
    125,539.20x = 188,107.20 × 66,297.60
  4. Step 4: Simplify right side
    125,539.20x = 12,471,055,902.72
  5. Step 5: Solve for x
    x = 12,471,055,902.72/125,539.20
  6. Step 6: Final answer
    x = 99,339.93

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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.