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Finding the Fourth Proportional to 153,939.70, 230,909.55 and 146,722.60

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Solution

The fourth proportional to 153,939.70, 230,909.55 and 146,722.60 is: 220,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,939.70 : 230,909.55 = 146,722.60 : x
  2. Step 2: Convert to fraction form
    153,939.70/230,909.55 = 146,722.60/x
  3. Step 3: Cross multiply
    153,939.70x = 230,909.55 × 146,722.60
  4. Step 4: Simplify right side
    153,939.70x = 33,879,649,540.83
  5. Step 5: Solve for x
    x = 33,879,649,540.83/153,939.70
  6. Step 6: Final answer
    x = 220,083.90

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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.