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Finding the Fourth Proportional to 123,310.60, 184,857.90 and 83,739.40

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Solution

The fourth proportional to 123,310.60, 184,857.90 and 83,739.40 is: 125,535.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,310.60 : 184,857.90 = 83,739.40 : x
  2. Step 2: Convert to fraction form
    123,310.60/184,857.90 = 83,739.40/x
  3. Step 3: Cross multiply
    123,310.60x = 184,857.90 × 83,739.40
  4. Step 4: Simplify right side
    123,310.60x = 15,479,889,631.26
  5. Step 5: Solve for x
    x = 15,479,889,631.26/123,310.60
  6. Step 6: Final answer
    x = 125,535.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.