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Finding the Fourth Proportional to 136,673.51, 205,037.94 and 57,787.61

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Solution

The fourth proportional to 136,673.51, 205,037.94 and 57,787.61 is: 86,693.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,673.51 : 205,037.94 = 57,787.61 : x
  2. Step 2: Convert to fraction form
    136,673.51/205,037.94 = 57,787.61/x
  3. Step 3: Cross multiply
    136,673.51x = 205,037.94 × 57,787.61
  4. Step 4: Simplify right side
    136,673.51x = 11,848,652,511.92
  5. Step 5: Solve for x
    x = 11,848,652,511.92/136,673.51
  6. Step 6: Final answer
    x = 86,693.12

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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.