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Finding the Fourth Proportional to 110,921.40, 166,163.40 and 103,048.20

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Solution

The fourth proportional to 110,921.40, 166,163.40 and 103,048.20 is: 154,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,921.40 : 166,163.40 = 103,048.20 : x
  2. Step 2: Convert to fraction form
    110,921.40/166,163.40 = 103,048.20/x
  3. Step 3: Cross multiply
    110,921.40x = 166,163.40 × 103,048.20
  4. Step 4: Simplify right side
    110,921.40x = 17,122,839,275.88
  5. Step 5: Solve for x
    x = 17,122,839,275.88/110,921.40
  6. Step 6: Final answer
    x = 154,369.12

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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.