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Finding the Fourth Proportional to 137,697.03, 206,422.53 and 66,579.88

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Solution

The fourth proportional to 137,697.03, 206,422.53 and 66,579.88 is: 99,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,697.03 : 206,422.53 = 66,579.88 : x
  2. Step 2: Convert to fraction form
    137,697.03/206,422.53 = 66,579.88/x
  3. Step 3: Cross multiply
    137,697.03x = 206,422.53 × 66,579.88
  4. Step 4: Simplify right side
    137,697.03x = 13,743,587,276.70
  5. Step 5: Solve for x
    x = 13,743,587,276.70/137,697.03
  6. Step 6: Final answer
    x = 99,810.34

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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.