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Finding the Fourth Proportional to 123,101, 169,889.10 and 68,660.90

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Solution

The fourth proportional to 123,101, 169,889.10 and 68,660.90 is: 94,757.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,101 : 169,889.10 = 68,660.90 : x
  2. Step 2: Convert to fraction form
    123,101/169,889.10 = 68,660.90/x
  3. Step 3: Cross multiply
    123,101x = 169,889.10 × 68,660.90
  4. Step 4: Simplify right side
    123,101x = 11,664,738,506.19
  5. Step 5: Solve for x
    x = 11,664,738,506.19/123,101
  6. Step 6: Final answer
    x = 94,757.46

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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.