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Finding the Fourth Proportional to 124,701.21, 187,046.13 and 45,809.64

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Solution

The fourth proportional to 124,701.21, 187,046.13 and 45,809.64 is: 68,712.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,701.21 : 187,046.13 = 45,809.64 : x
  2. Step 2: Convert to fraction form
    124,701.21/187,046.13 = 45,809.64/x
  3. Step 3: Cross multiply
    124,701.21x = 187,046.13 × 45,809.64
  4. Step 4: Simplify right side
    124,701.21x = 8,568,515,878.69
  5. Step 5: Solve for x
    x = 8,568,515,878.69/124,701.21
  6. Step 6: Final answer
    x = 68,712.37

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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.