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Finding the Fourth Proportional to 146,420.80, 219,631.20 and 123,611.20

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Solution

The fourth proportional to 146,420.80, 219,631.20 and 123,611.20 is: 185,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,420.80 : 219,631.20 = 123,611.20 : x
  2. Step 2: Convert to fraction form
    146,420.80/219,631.20 = 123,611.20/x
  3. Step 3: Cross multiply
    146,420.80x = 219,631.20 × 123,611.20
  4. Step 4: Simplify right side
    146,420.80x = 27,148,876,189.44
  5. Step 5: Solve for x
    x = 27,148,876,189.44/146,420.80
  6. Step 6: Final answer
    x = 185,416.80

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1.5x scale

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.