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Finding the Fourth Proportional to 123,197.91, 170,018.90 and 69,481.81

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Solution

The fourth proportional to 123,197.91, 170,018.90 and 69,481.81 is: 95,888.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,197.91 : 170,018.90 = 69,481.81 : x
  2. Step 2: Convert to fraction form
    123,197.91/170,018.90 = 69,481.81/x
  3. Step 3: Cross multiply
    123,197.91x = 170,018.90 × 69,481.81
  4. Step 4: Simplify right side
    123,197.91x = 11,813,220,906.21
  5. Step 5: Solve for x
    x = 11,813,220,906.21/123,197.91
  6. Step 6: Final answer
    x = 95,888.16

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1.5x scale

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.