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Finding the Fourth Proportional to 137,445.66, 206,103.79 and 53,245.25

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Solution

The fourth proportional to 137,445.66, 206,103.79 and 53,245.25 is: 79,842.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,445.66 : 206,103.79 = 53,245.25 : x
  2. Step 2: Convert to fraction form
    137,445.66/206,103.79 = 53,245.25/x
  3. Step 3: Cross multiply
    137,445.66x = 206,103.79 × 53,245.25
  4. Step 4: Simplify right side
    137,445.66x = 10,974,047,633.42
  5. Step 5: Solve for x
    x = 10,974,047,633.42/137,445.66
  6. Step 6: Final answer
    x = 79,842.81

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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.