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Finding the Fourth Proportional to 111,127.40, 166,691.10 and 103,691.60

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Solution

The fourth proportional to 111,127.40, 166,691.10 and 103,691.60 is: 155,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,127.40 : 166,691.10 = 103,691.60 : x
  2. Step 2: Convert to fraction form
    111,127.40/166,691.10 = 103,691.60/x
  3. Step 3: Cross multiply
    111,127.40x = 166,691.10 × 103,691.60
  4. Step 4: Simplify right side
    111,127.40x = 17,284,466,864.76
  5. Step 5: Solve for x
    x = 17,284,466,864.76/111,127.40
  6. Step 6: Final answer
    x = 155,537.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.