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Finding the Fourth Proportional to 123,446.20, 185,169.30 and 113,823.40

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Solution

The fourth proportional to 123,446.20, 185,169.30 and 113,823.40 is: 170,735.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,446.20 : 185,169.30 = 113,823.40 : x
  2. Step 2: Convert to fraction form
    123,446.20/185,169.30 = 113,823.40/x
  3. Step 3: Cross multiply
    123,446.20x = 185,169.30 × 113,823.40
  4. Step 4: Simplify right side
    123,446.20x = 21,076,599,301.62
  5. Step 5: Solve for x
    x = 21,076,599,301.62/123,446.20
  6. Step 6: Final answer
    x = 170,735.10

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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.