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Finding the Fourth Proportional to 147,872.60, 221,808.90 and 121,628.60

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Solution

The fourth proportional to 147,872.60, 221,808.90 and 121,628.60 is: 182,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,872.60 : 221,808.90 = 121,628.60 : x
  2. Step 2: Convert to fraction form
    147,872.60/221,808.90 = 121,628.60/x
  3. Step 3: Cross multiply
    147,872.60x = 221,808.90 × 121,628.60
  4. Step 4: Simplify right side
    147,872.60x = 26,978,305,974.54
  5. Step 5: Solve for x
    x = 26,978,305,974.54/147,872.60
  6. Step 6: Final answer
    x = 182,442.90

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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.