Home / 136,945,142.85-188,874,102.72-120,389,869.95

Finding the Fourth Proportional to 136,945,142.85, 188,874,102.72 and 120,389,869.95

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Solution

The fourth proportional to 136,945,142.85, 188,874,102.72 and 120,389,869.95 is: 166,041,147.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,945,142.85 : 188,874,102.72 = 120,389,869.95 : x
  2. Step 2: Convert to fraction form
    136,945,142.85/188,874,102.72 = 120,389,869.95/x
  3. Step 3: Cross multiply
    136,945,142.85x = 188,874,102.72 × 120,389,869.95
  4. Step 4: Simplify right side
    136,945,142.85x = 22,738,528,663,383,740
  5. Step 5: Solve for x
    x = 22,738,528,663,383,740/136,945,142.85
  6. Step 6: Final answer
    x = 166,041,147.50

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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.