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Finding the Fourth Proportional to 125,619.90, 188,323.92 and 54,489.00

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Solution

The fourth proportional to 125,619.90, 188,323.92 and 54,489.00 is: 81,687.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,619.90 : 188,323.92 = 54,489.00 : x
  2. Step 2: Convert to fraction form
    125,619.90/188,323.92 = 54,489.00/x
  3. Step 3: Cross multiply
    125,619.90x = 188,323.92 × 54,489.00
  4. Step 4: Simplify right side
    125,619.90x = 10,261,582,783.09
  5. Step 5: Solve for x
    x = 10,261,582,783.09/125,619.90
  6. Step 6: Final answer
    x = 81,687.56

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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.