Home / 117,072.36-161,425.19-86,489.72

Finding the Fourth Proportional to 117,072.36, 161,425.19 and 86,489.72

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Solution

The fourth proportional to 117,072.36, 161,425.19 and 86,489.72 is: 119,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,072.36 : 161,425.19 = 86,489.72 : x
  2. Step 2: Convert to fraction form
    117,072.36/161,425.19 = 86,489.72/x
  3. Step 3: Cross multiply
    117,072.36x = 161,425.19 × 86,489.72
  4. Step 4: Simplify right side
    117,072.36x = 13,961,618,244.47
  5. Step 5: Solve for x
    x = 13,961,618,244.47/117,072.36
  6. Step 6: Final answer
    x = 119,256.32

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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.