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Finding the Fourth Proportional to 137,700.81, 206,529.35 and 53,499.49

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Solution

The fourth proportional to 137,700.81, 206,529.35 and 53,499.49 is: 80,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,700.81 : 206,529.35 = 53,499.49 : x
  2. Step 2: Convert to fraction form
    137,700.81/206,529.35 = 53,499.49/x
  3. Step 3: Cross multiply
    137,700.81x = 206,529.35 × 53,499.49
  4. Step 4: Simplify right side
    137,700.81x = 11,049,214,111.21
  5. Step 5: Solve for x
    x = 11,049,214,111.21/137,700.81
  6. Step 6: Final answer
    x = 80,240.73

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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.