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Finding the Fourth Proportional to 123,324.45, 170,169.50 and 72,317.94

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Solution

The fourth proportional to 123,324.45, 170,169.50 and 72,317.94 is: 99,788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,324.45 : 170,169.50 = 72,317.94 : x
  2. Step 2: Convert to fraction form
    123,324.45/170,169.50 = 72,317.94/x
  3. Step 3: Cross multiply
    123,324.45x = 170,169.50 × 72,317.94
  4. Step 4: Simplify right side
    123,324.45x = 12,306,307,871.62
  5. Step 5: Solve for x
    x = 12,306,307,871.62/123,324.45
  6. Step 6: Final answer
    x = 99,788.06

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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.