Home / 136,945,143.85-188,874,104.10-120,389,870.95

Finding the Fourth Proportional to 136,945,143.85, 188,874,104.10 and 120,389,870.95

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Solution

The fourth proportional to 136,945,143.85, 188,874,104.10 and 120,389,870.95 is: 166,041,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,945,143.85 : 188,874,104.10 = 120,389,870.95 : x
  2. Step 2: Convert to fraction form
    136,945,143.85/188,874,104.10 = 120,389,870.95/x
  3. Step 3: Cross multiply
    136,945,143.85x = 188,874,104.10 × 120,389,870.95
  4. Step 4: Simplify right side
    136,945,143.85x = 22,738,529,018,395,864
  5. Step 5: Solve for x
    x = 22,738,529,018,395,864/136,945,143.85
  6. Step 6: Final answer
    x = 166,041,148.88

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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.