Home / 117,078.48-161,530.20-74,650.68

Finding the Fourth Proportional to 117,078.48, 161,530.20 and 74,650.68

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Solution

The fourth proportional to 117,078.48, 161,530.20 and 74,650.68 is: 102,993.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,078.48 : 161,530.20 = 74,650.68 : x
  2. Step 2: Convert to fraction form
    117,078.48/161,530.20 = 74,650.68/x
  3. Step 3: Cross multiply
    117,078.48x = 161,530.20 × 74,650.68
  4. Step 4: Simplify right side
    117,078.48x = 12,058,339,270.54
  5. Step 5: Solve for x
    x = 12,058,339,270.54/117,078.48
  6. Step 6: Final answer
    x = 102,993.64

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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.