Home / 117,078.50-161,530.62-71,709.19

Finding the Fourth Proportional to 117,078.50, 161,530.62 and 71,709.19

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Solution

The fourth proportional to 117,078.50, 161,530.62 and 71,709.19 is: 98,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,078.50 : 161,530.62 = 71,709.19 : x
  2. Step 2: Convert to fraction form
    117,078.50/161,530.62 = 71,709.19/x
  3. Step 3: Cross multiply
    117,078.50x = 161,530.62 × 71,709.19
  4. Step 4: Simplify right side
    117,078.50x = 11,583,229,112.74
  5. Step 5: Solve for x
    x = 11,583,229,112.74/117,078.50
  6. Step 6: Final answer
    x = 98,935.58

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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.