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Finding the Fourth Proportional to 123,395.67, 170,121.35 and 97,986.14

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Solution

The fourth proportional to 123,395.67, 170,121.35 and 97,986.14 is: 135,090.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.67 : 170,121.35 = 97,986.14 : x
  2. Step 2: Convert to fraction form
    123,395.67/170,121.35 = 97,986.14/x
  3. Step 3: Cross multiply
    123,395.67x = 170,121.35 × 97,986.14
  4. Step 4: Simplify right side
    123,395.67x = 16,669,534,720.28
  5. Step 5: Solve for x
    x = 16,669,534,720.28/123,395.67
  6. Step 6: Final answer
    x = 135,090.12

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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.