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Finding the Fourth Proportional to 123,205.95, 170,029.98 and 69,489.81

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Solution

The fourth proportional to 123,205.95, 170,029.98 and 69,489.81 is: 95,899.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,205.95 : 170,029.98 = 69,489.81 : x
  2. Step 2: Convert to fraction form
    123,205.95/170,029.98 = 69,489.81/x
  3. Step 3: Cross multiply
    123,205.95x = 170,029.98 × 69,489.81
  4. Step 4: Simplify right side
    123,205.95x = 11,815,351,004.50
  5. Step 5: Solve for x
    x = 11,815,351,004.50/123,205.95
  6. Step 6: Final answer
    x = 95,899.19

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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.