Home / 78,160.62-117,239.91-18,996.12

Finding the Fourth Proportional to 78,160.62, 117,239.91 and 18,996.12

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Solution

The fourth proportional to 78,160.62, 117,239.91 and 18,996.12 is: 28,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,160.62 : 117,239.91 = 18,996.12 : x
  2. Step 2: Convert to fraction form
    78,160.62/117,239.91 = 18,996.12/x
  3. Step 3: Cross multiply
    78,160.62x = 117,239.91 × 18,996.12
  4. Step 4: Simplify right side
    78,160.62x = 2,227,103,399.15
  5. Step 5: Solve for x
    x = 2,227,103,399.15/78,160.62
  6. Step 6: Final answer
    x = 28,493.93

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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.