Home / 138,072.60-190,537.94-76,816.44

Finding the Fourth Proportional to 138,072.60, 190,537.94 and 76,816.44

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Solution

The fourth proportional to 138,072.60, 190,537.94 and 76,816.44 is: 106,005.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,072.60 : 190,537.94 = 76,816.44 : x
  2. Step 2: Convert to fraction form
    138,072.60/190,537.94 = 76,816.44/x
  3. Step 3: Cross multiply
    138,072.60x = 190,537.94 × 76,816.44
  4. Step 4: Simplify right side
    138,072.60x = 14,636,446,235.73
  5. Step 5: Solve for x
    x = 14,636,446,235.73/138,072.60
  6. Step 6: Final answer
    x = 106,005.44

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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.