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Finding the Fourth Proportional to 103,632.65, 155,189.77 and 82,896.65

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Solution

The fourth proportional to 103,632.65, 155,189.77 and 82,896.65 is: 124,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,632.65 : 155,189.77 = 82,896.65 : x
  2. Step 2: Convert to fraction form
    103,632.65/155,189.77 = 82,896.65/x
  3. Step 3: Cross multiply
    103,632.65x = 155,189.77 × 82,896.65
  4. Step 4: Simplify right side
    103,632.65x = 12,864,712,047.27
  5. Step 5: Solve for x
    x = 12,864,712,047.27/103,632.65
  6. Step 6: Final answer
    x = 124,137.63

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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.