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Finding the Fourth Proportional to 117,197.48, 161,720.93 and 65,504.90

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Solution

The fourth proportional to 117,197.48, 161,720.93 and 65,504.90 is: 90,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,197.48 : 161,720.93 = 65,504.90 : x
  2. Step 2: Convert to fraction form
    117,197.48/161,720.93 = 65,504.90/x
  3. Step 3: Cross multiply
    117,197.48x = 161,720.93 × 65,504.90
  4. Step 4: Simplify right side
    117,197.48x = 10,593,512,538.95
  5. Step 5: Solve for x
    x = 10,593,512,538.95/117,197.48
  6. Step 6: Final answer
    x = 90,390.28

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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.