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Finding the Fourth Proportional to 123,995.40, 171,102.71 and 68,806.11

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Solution

The fourth proportional to 123,995.40, 171,102.71 and 68,806.11 is: 94,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,995.40 : 171,102.71 = 68,806.11 : x
  2. Step 2: Convert to fraction form
    123,995.40/171,102.71 = 68,806.11/x
  3. Step 3: Cross multiply
    123,995.40x = 171,102.71 × 68,806.11
  4. Step 4: Simplify right side
    123,995.40x = 11,772,912,057.57
  5. Step 5: Solve for x
    x = 11,772,912,057.57/123,995.40
  6. Step 6: Final answer
    x = 94,946.36

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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.