Home / 129,509,096.68-178,740,780-82,451,137.48

Finding the Fourth Proportional to 129,509,096.68, 178,740,780 and 82,451,137.48

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Solution

The fourth proportional to 129,509,096.68, 178,740,780 and 82,451,137.48 is: 113,794,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,509,096.68 : 178,740,780 = 82,451,137.48 : x
  2. Step 2: Convert to fraction form
    129,509,096.68/178,740,780 = 82,451,137.48/x
  3. Step 3: Cross multiply
    129,509,096.68x = 178,740,780 × 82,451,137.48
  4. Step 4: Simplify right side
    129,509,096.68x = 14,737,380,625,062,436
  5. Step 5: Solve for x
    x = 14,737,380,625,062,436/129,509,096.68
  6. Step 6: Final answer
    x = 113,794,173.56

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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.