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Finding the Fourth Proportional to 117,383.32, 161,860.60 and 87,224.59

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Solution

The fourth proportional to 117,383.32, 161,860.60 and 87,224.59 is: 120,274.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,383.32 : 161,860.60 = 87,224.59 : x
  2. Step 2: Convert to fraction form
    117,383.32/161,860.60 = 87,224.59/x
  3. Step 3: Cross multiply
    117,383.32x = 161,860.60 × 87,224.59
  4. Step 4: Simplify right side
    117,383.32x = 14,118,223,849.44
  5. Step 5: Solve for x
    x = 14,118,223,849.44/117,383.32
  6. Step 6: Final answer
    x = 120,274.53

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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.