Home / 117,129.34-161,638.57-63,414.39

Finding the Fourth Proportional to 117,129.34, 161,638.57 and 63,414.39

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Solution

The fourth proportional to 117,129.34, 161,638.57 and 63,414.39 is: 87,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,129.34 : 161,638.57 = 63,414.39 : x
  2. Step 2: Convert to fraction form
    117,129.34/161,638.57 = 63,414.39/x
  3. Step 3: Cross multiply
    117,129.34x = 161,638.57 × 63,414.39
  4. Step 4: Simplify right side
    117,129.34x = 10,250,211,317.02
  5. Step 5: Solve for x
    x = 10,250,211,317.02/117,129.34
  6. Step 6: Final answer
    x = 87,511.91

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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.