Home / 136,362.42-188,180.10-79,784.73

Finding the Fourth Proportional to 136,362.42, 188,180.10 and 79,784.73

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Solution

The fourth proportional to 136,362.42, 188,180.10 and 79,784.73 is: 110,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,362.42 : 188,180.10 = 79,784.73 : x
  2. Step 2: Convert to fraction form
    136,362.42/188,180.10 = 79,784.73/x
  3. Step 3: Cross multiply
    136,362.42x = 188,180.10 × 79,784.73
  4. Step 4: Simplify right side
    136,362.42x = 15,013,898,469.87
  5. Step 5: Solve for x
    x = 15,013,898,469.87/136,362.42
  6. Step 6: Final answer
    x = 110,102.90

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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.