Home / 129,943,755.32-194,784,474.96-81,455,659.73

Finding the Fourth Proportional to 129,943,755.32, 194,784,474.96 and 81,455,659.73

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Solution

The fourth proportional to 129,943,755.32, 194,784,474.96 and 81,455,659.73 is: 122,101,272.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,943,755.32 : 194,784,474.96 = 81,455,659.73 : x
  2. Step 2: Convert to fraction form
    129,943,755.32/194,784,474.96 = 81,455,659.73/x
  3. Step 3: Cross multiply
    129,943,755.32x = 194,784,474.96 × 81,455,659.73
  4. Step 4: Simplify right side
    129,943,755.32x = 15,866,297,912,784,986
  5. Step 5: Solve for x
    x = 15,866,297,912,784,986/129,943,755.32
  6. Step 6: Final answer
    x = 122,101,272.77

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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.