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Finding the Fourth Proportional to 151,745.40, 227,618.10 and 72,840.60

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Solution

The fourth proportional to 151,745.40, 227,618.10 and 72,840.60 is: 109,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,745.40 : 227,618.10 = 72,840.60 : x
  2. Step 2: Convert to fraction form
    151,745.40/227,618.10 = 72,840.60/x
  3. Step 3: Cross multiply
    151,745.40x = 227,618.10 × 72,840.60
  4. Step 4: Simplify right side
    151,745.40x = 16,579,838,974.86
  5. Step 5: Solve for x
    x = 16,579,838,974.86/151,745.40
  6. Step 6: Final answer
    x = 109,260.90

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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.