Home / 123,564.50-170,537.22-78,246.62

Finding the Fourth Proportional to 123,564.50, 170,537.22 and 78,246.62

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Solution

The fourth proportional to 123,564.50, 170,537.22 and 78,246.62 is: 107,991.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,564.50 : 170,537.22 = 78,246.62 : x
  2. Step 2: Convert to fraction form
    123,564.50/170,537.22 = 78,246.62/x
  3. Step 3: Cross multiply
    123,564.50x = 170,537.22 × 78,246.62
  4. Step 4: Simplify right side
    123,564.50x = 13,343,961,049.20
  5. Step 5: Solve for x
    x = 13,343,961,049.20/123,564.50
  6. Step 6: Final answer
    x = 107,991.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.