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Finding the Fourth Proportional to 203,943.60, 306,109.98 and 125,211.60

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Solution

The fourth proportional to 203,943.60, 306,109.98 and 125,211.60 is: 187,936.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,943.60 : 306,109.98 = 125,211.60 : x
  2. Step 2: Convert to fraction form
    203,943.60/306,109.98 = 125,211.60/x
  3. Step 3: Cross multiply
    203,943.60x = 306,109.98 × 125,211.60
  4. Step 4: Simplify right side
    203,943.60x = 38,328,520,371.77
  5. Step 5: Solve for x
    x = 38,328,520,371.77/203,943.60
  6. Step 6: Final answer
    x = 187,936.86

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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.