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Finding the Fourth Proportional to 137,820.21, 206,453.51 and 62,837.21

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Solution

The fourth proportional to 137,820.21, 206,453.51 and 62,837.21 is: 94,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,820.21 : 206,453.51 = 62,837.21 : x
  2. Step 2: Convert to fraction form
    137,820.21/206,453.51 = 62,837.21/x
  3. Step 3: Cross multiply
    137,820.21x = 206,453.51 × 62,837.21
  4. Step 4: Simplify right side
    137,820.21x = 12,972,961,530.84
  5. Step 5: Solve for x
    x = 12,972,961,530.84/137,820.21
  6. Step 6: Final answer
    x = 94,129.61

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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.