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Finding the Fourth Proportional to 146,782.60, 220,173.90 and 76,652.80

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Solution

The fourth proportional to 146,782.60, 220,173.90 and 76,652.80 is: 114,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,782.60 : 220,173.90 = 76,652.80 : x
  2. Step 2: Convert to fraction form
    146,782.60/220,173.90 = 76,652.80/x
  3. Step 3: Cross multiply
    146,782.60x = 220,173.90 × 76,652.80
  4. Step 4: Simplify right side
    146,782.60x = 16,876,945,921.92
  5. Step 5: Solve for x
    x = 16,876,945,921.92/146,782.60
  6. Step 6: Final answer
    x = 114,979.20

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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.