Home / 79,205.74-118,513.32-78,319.96

Finding the Fourth Proportional to 79,205.74, 118,513.32 and 78,319.96

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Solution

The fourth proportional to 79,205.74, 118,513.32 and 78,319.96 is: 117,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.74 : 118,513.32 = 78,319.96 : x
  2. Step 2: Convert to fraction form
    79,205.74/118,513.32 = 78,319.96/x
  3. Step 3: Cross multiply
    79,205.74x = 118,513.32 × 78,319.96
  4. Step 4: Simplify right side
    79,205.74x = 9,281,958,481.87
  5. Step 5: Solve for x
    x = 9,281,958,481.87/79,205.74
  6. Step 6: Final answer
    x = 117,187.95

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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.