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Finding the Fourth Proportional to 140,019.52, 209,579.70 and 73,364.60

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Solution

The fourth proportional to 140,019.52, 209,579.70 and 73,364.60 is: 109,811.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019.52 : 209,579.70 = 73,364.60 : x
  2. Step 2: Convert to fraction form
    140,019.52/209,579.70 = 73,364.60/x
  3. Step 3: Cross multiply
    140,019.52x = 209,579.70 × 73,364.60
  4. Step 4: Simplify right side
    140,019.52x = 15,375,730,858.62
  5. Step 5: Solve for x
    x = 15,375,730,858.62/140,019.52
  6. Step 6: Final answer
    x = 109,811.34

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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.