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Finding the Fourth Proportional to 123,739.60, 185,609.40 and 103,003.60

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Solution

The fourth proportional to 123,739.60, 185,609.40 and 103,003.60 is: 154,505.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,739.60 : 185,609.40 = 103,003.60 : x
  2. Step 2: Convert to fraction form
    123,739.60/185,609.40 = 103,003.60/x
  3. Step 3: Cross multiply
    123,739.60x = 185,609.40 × 103,003.60
  4. Step 4: Simplify right side
    123,739.60x = 19,118,436,393.84
  5. Step 5: Solve for x
    x = 19,118,436,393.84/123,739.60
  6. Step 6: Final answer
    x = 154,505.40

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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.