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Finding the Fourth Proportional to 123,914.56, 171,005.44 and 72,930.88

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Solution

The fourth proportional to 123,914.56, 171,005.44 and 72,930.88 is: 100,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,914.56 : 171,005.44 = 72,930.88 : x
  2. Step 2: Convert to fraction form
    123,914.56/171,005.44 = 72,930.88/x
  3. Step 3: Cross multiply
    123,914.56x = 171,005.44 × 72,930.88
  4. Step 4: Simplify right side
    123,914.56x = 12,471,577,223.99
  5. Step 5: Solve for x
    x = 12,471,577,223.99/123,914.56
  6. Step 6: Final answer
    x = 100,646.58

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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.