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Finding the Fourth Proportional to 136,118.88, 203,897.43 and 79,787.93

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Solution

The fourth proportional to 136,118.88, 203,897.43 and 79,787.93 is: 119,517.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,118.88 : 203,897.43 = 79,787.93 : x
  2. Step 2: Convert to fraction form
    136,118.88/203,897.43 = 79,787.93/x
  3. Step 3: Cross multiply
    136,118.88x = 203,897.43 × 79,787.93
  4. Step 4: Simplify right side
    136,118.88x = 16,268,552,852.53
  5. Step 5: Solve for x
    x = 16,268,552,852.53/136,118.88
  6. Step 6: Final answer
    x = 119,517.24

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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.