Home / 79,207.74-118,516.32-78,321.96

Finding the Fourth Proportional to 79,207.74, 118,516.32 and 78,321.96

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Solution

The fourth proportional to 79,207.74, 118,516.32 and 78,321.96 is: 117,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,207.74 : 118,516.32 = 78,321.96 : x
  2. Step 2: Convert to fraction form
    79,207.74/118,516.32 = 78,321.96/x
  3. Step 3: Cross multiply
    79,207.74x = 118,516.32 × 78,321.96
  4. Step 4: Simplify right side
    79,207.74x = 9,282,430,474.39
  5. Step 5: Solve for x
    x = 9,282,430,474.39/79,207.74
  6. Step 6: Final answer
    x = 117,190.95

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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.