Home / 136,787.08-205,109.16-61,871.44

Finding the Fourth Proportional to 136,787.08, 205,109.16 and 61,871.44

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Solution

The fourth proportional to 136,787.08, 205,109.16 and 61,871.44 is: 92,774.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,787.08 : 205,109.16 = 61,871.44 : x
  2. Step 2: Convert to fraction form
    136,787.08/205,109.16 = 61,871.44/x
  3. Step 3: Cross multiply
    136,787.08x = 205,109.16 × 61,871.44
  4. Step 4: Simplify right side
    136,787.08x = 12,690,399,086.39
  5. Step 5: Solve for x
    x = 12,690,399,086.39/136,787.08
  6. Step 6: Final answer
    x = 92,774.84

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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.