Home / 117,129.35-161,638.27-63,414.35

Finding the Fourth Proportional to 117,129.35, 161,638.27 and 63,414.35

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Solution

The fourth proportional to 117,129.35, 161,638.27 and 63,414.35 is: 87,511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,129.35 : 161,638.27 = 63,414.35 : x
  2. Step 2: Convert to fraction form
    117,129.35/161,638.27 = 63,414.35/x
  3. Step 3: Cross multiply
    117,129.35x = 161,638.27 × 63,414.35
  4. Step 4: Simplify right side
    117,129.35x = 10,250,186,072.73
  5. Step 5: Solve for x
    x = 10,250,186,072.73/117,129.35
  6. Step 6: Final answer
    x = 87,511.68

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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.