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Finding the Fourth Proportional to 136,667.20, 205,000.80 and 124,201.30

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Solution

The fourth proportional to 136,667.20, 205,000.80 and 124,201.30 is: 186,301.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,667.20 : 205,000.80 = 124,201.30 : x
  2. Step 2: Convert to fraction form
    136,667.20/205,000.80 = 124,201.30/x
  3. Step 3: Cross multiply
    136,667.20x = 205,000.80 × 124,201.30
  4. Step 4: Simplify right side
    136,667.20x = 25,461,365,861.04
  5. Step 5: Solve for x
    x = 25,461,365,861.04/136,667.20
  6. Step 6: Final answer
    x = 186,301.95

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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.