Home / 117,205.05-161,743.37-63,489.90

Finding the Fourth Proportional to 117,205.05, 161,743.37 and 63,489.90

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Solution

The fourth proportional to 117,205.05, 161,743.37 and 63,489.90 is: 87,616.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,205.05 : 161,743.37 = 63,489.90 : x
  2. Step 2: Convert to fraction form
    117,205.05/161,743.37 = 63,489.90/x
  3. Step 3: Cross multiply
    117,205.05x = 161,743.37 × 63,489.90
  4. Step 4: Simplify right side
    117,205.05x = 10,269,070,069.51
  5. Step 5: Solve for x
    x = 10,269,070,069.51/117,205.05
  6. Step 6: Final answer
    x = 87,616.28

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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.