Home / 84,172.44-126,262.96-79,916

Finding the Fourth Proportional to 84,172.44, 126,262.96 and 79,916

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Solution

The fourth proportional to 84,172.44, 126,262.96 and 79,916 is: 119,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,172.44 : 126,262.96 = 79,916 : x
  2. Step 2: Convert to fraction form
    84,172.44/126,262.96 = 79,916/x
  3. Step 3: Cross multiply
    84,172.44x = 126,262.96 × 79,916
  4. Step 4: Simplify right side
    84,172.44x = 10,090,430,711.36
  5. Step 5: Solve for x
    x = 10,090,430,711.36/84,172.44
  6. Step 6: Final answer
    x = 119,878.08

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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.