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Finding the Fourth Proportional to 221,121.68, 305,156.14 and 125,644.52

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Solution

The fourth proportional to 221,121.68, 305,156.14 and 125,644.52 is: 173,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,121.68 : 305,156.14 = 125,644.52 : x
  2. Step 2: Convert to fraction form
    221,121.68/305,156.14 = 125,644.52/x
  3. Step 3: Cross multiply
    221,121.68x = 305,156.14 × 125,644.52
  4. Step 4: Simplify right side
    221,121.68x = 38,341,196,735.35
  5. Step 5: Solve for x
    x = 38,341,196,735.35/221,121.68
  6. Step 6: Final answer
    x = 173,394.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.