Home / 99,917.21-137,881.64-54,596.73

Finding the Fourth Proportional to 99,917.21, 137,881.64 and 54,596.73

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Solution

The fourth proportional to 99,917.21, 137,881.64 and 54,596.73 is: 75,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,917.21 : 137,881.64 = 54,596.73 : x
  2. Step 2: Convert to fraction form
    99,917.21/137,881.64 = 54,596.73/x
  3. Step 3: Cross multiply
    99,917.21x = 137,881.64 × 54,596.73
  4. Step 4: Simplify right side
    99,917.21x = 7,527,887,324.59
  5. Step 5: Solve for x
    x = 7,527,887,324.59/99,917.21
  6. Step 6: Final answer
    x = 75,341.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.