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Finding the Fourth Proportional to 111,331.40, 166,997.10 and 104,916.20

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Solution

The fourth proportional to 111,331.40, 166,997.10 and 104,916.20 is: 157,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,331.40 : 166,997.10 = 104,916.20 : x
  2. Step 2: Convert to fraction form
    111,331.40/166,997.10 = 104,916.20/x
  3. Step 3: Cross multiply
    111,331.40x = 166,997.10 × 104,916.20
  4. Step 4: Simplify right side
    111,331.40x = 17,520,701,143.02
  5. Step 5: Solve for x
    x = 17,520,701,143.02/111,331.40
  6. Step 6: Final answer
    x = 157,374.30

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1.5x scale

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.