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Finding the Fourth Proportional to 136,917.84, 205,400.11 and 61,043.91

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Solution

The fourth proportional to 136,917.84, 205,400.11 and 61,043.91 is: 91,576.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,917.84 : 205,400.11 = 61,043.91 : x
  2. Step 2: Convert to fraction form
    136,917.84/205,400.11 = 61,043.91/x
  3. Step 3: Cross multiply
    136,917.84x = 205,400.11 × 61,043.91
  4. Step 4: Simplify right side
    136,917.84x = 12,538,424,496.61
  5. Step 5: Solve for x
    x = 12,538,424,496.61/136,917.84
  6. Step 6: Final answer
    x = 91,576.27

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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.