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Finding the Fourth Proportional to 111,029.40, 166,325.40 and 103,156.20

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Solution

The fourth proportional to 111,029.40, 166,325.40 and 103,156.20 is: 154,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,029.40 : 166,325.40 = 103,156.20 : x
  2. Step 2: Convert to fraction form
    111,029.40/166,325.40 = 103,156.20/x
  3. Step 3: Cross multiply
    111,029.40x = 166,325.40 × 103,156.20
  4. Step 4: Simplify right side
    111,029.40x = 17,157,496,227.48
  5. Step 5: Solve for x
    x = 17,157,496,227.48/111,029.40
  6. Step 6: Final answer
    x = 154,531.11

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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.