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Finding the Fourth Proportional to 138,600.73, 207,926.74 and 43,854.77

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Solution

The fourth proportional to 138,600.73, 207,926.74 and 43,854.77 is: 65,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,600.73 : 207,926.74 = 43,854.77 : x
  2. Step 2: Convert to fraction form
    138,600.73/207,926.74 = 43,854.77/x
  3. Step 3: Cross multiply
    138,600.73x = 207,926.74 × 43,854.77
  4. Step 4: Simplify right side
    138,600.73x = 9,118,579,934.19
  5. Step 5: Solve for x
    x = 9,118,579,934.19/138,600.73
  6. Step 6: Final answer
    x = 65,790.27

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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.