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Finding the Fourth Proportional to 123,872.28, 170,944.64 and 67,283.64

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Solution

The fourth proportional to 123,872.28, 170,944.64 and 67,283.64 is: 92,851.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,872.28 : 170,944.64 = 67,283.64 : x
  2. Step 2: Convert to fraction form
    123,872.28/170,944.64 = 67,283.64/x
  3. Step 3: Cross multiply
    123,872.28x = 170,944.64 × 67,283.64
  4. Step 4: Simplify right side
    123,872.28x = 11,501,777,617.69
  5. Step 5: Solve for x
    x = 11,501,777,617.69/123,872.28
  6. Step 6: Final answer
    x = 92,851.91

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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.