Home / 112,339,940.70-168,509,911.05-78,299,723.10

Finding the Fourth Proportional to 112,339,940.70, 168,509,911.05 and 78,299,723.10

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Solution

The fourth proportional to 112,339,940.70, 168,509,911.05 and 78,299,723.10 is: 117,449,584.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,339,940.70 : 168,509,911.05 = 78,299,723.10 : x
  2. Step 2: Convert to fraction form
    112,339,940.70/168,509,911.05 = 78,299,723.10/x
  3. Step 3: Cross multiply
    112,339,940.70x = 168,509,911.05 × 78,299,723.10
  4. Step 4: Simplify right side
    112,339,940.70x = 13,194,279,374,820,630
  5. Step 5: Solve for x
    x = 13,194,279,374,820,630/112,339,940.70
  6. Step 6: Final answer
    x = 117,449,584.65

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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.