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Finding the Fourth Proportional to 208,773.88, 312,757.72 and 124,601.20

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Solution

The fourth proportional to 208,773.88, 312,757.72 and 124,601.20 is: 186,661.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,773.88 : 312,757.72 = 124,601.20 : x
  2. Step 2: Convert to fraction form
    208,773.88/312,757.72 = 124,601.20/x
  3. Step 3: Cross multiply
    208,773.88x = 312,757.72 × 124,601.20
  4. Step 4: Simplify right side
    208,773.88x = 38,969,987,221.26
  5. Step 5: Solve for x
    x = 38,969,987,221.26/208,773.88
  6. Step 6: Final answer
    x = 186,661.22

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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.