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Finding the Fourth Proportional to 113,086.20, 169,629.30 and 29,980.20

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Solution

The fourth proportional to 113,086.20, 169,629.30 and 29,980.20 is: 44,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,086.20 : 169,629.30 = 29,980.20 : x
  2. Step 2: Convert to fraction form
    113,086.20/169,629.30 = 29,980.20/x
  3. Step 3: Cross multiply
    113,086.20x = 169,629.30 × 29,980.20
  4. Step 4: Simplify right side
    113,086.20x = 5,085,520,339.86
  5. Step 5: Solve for x
    x = 5,085,520,339.86/113,086.20
  6. Step 6: Final answer
    x = 44,970.30

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Similar ratio
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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.