Home / 129,681,972.12-194,211,262.39-74,181,540.61

Finding the Fourth Proportional to 129,681,972.12, 194,211,262.39 and 74,181,540.61

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Solution

The fourth proportional to 129,681,972.12, 194,211,262.39 and 74,181,540.61 is: 111,094,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,681,972.12 : 194,211,262.39 = 74,181,540.61 : x
  2. Step 2: Convert to fraction form
    129,681,972.12/194,211,262.39 = 74,181,540.61/x
  3. Step 3: Cross multiply
    129,681,972.12x = 194,211,262.39 × 74,181,540.61
  4. Step 4: Simplify right side
    129,681,972.12x = 14,406,890,647,903,150
  5. Step 5: Solve for x
    x = 14,406,890,647,903,150/129,681,972.12
  6. Step 6: Final answer
    x = 111,094,012.62

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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.