Home / 208,787.27-288,110.60-122,749.78

Finding the Fourth Proportional to 208,787.27, 288,110.60 and 122,749.78

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Solution

The fourth proportional to 208,787.27, 288,110.60 and 122,749.78 is: 169,385.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,787.27 : 288,110.60 = 122,749.78 : x
  2. Step 2: Convert to fraction form
    208,787.27/288,110.60 = 122,749.78/x
  3. Step 3: Cross multiply
    208,787.27x = 288,110.60 × 122,749.78
  4. Step 4: Simplify right side
    208,787.27x = 35,365,512,086.93
  5. Step 5: Solve for x
    x = 35,365,512,086.93/208,787.27
  6. Step 6: Final answer
    x = 169,385.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.