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Finding the Fourth Proportional to 113,481.60, 169,930.80 and 83,738.40

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Solution

The fourth proportional to 113,481.60, 169,930.80 and 83,738.40 is: 125,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,481.60 : 169,930.80 = 83,738.40 : x
  2. Step 2: Convert to fraction form
    113,481.60/169,930.80 = 83,738.40/x
  3. Step 3: Cross multiply
    113,481.60x = 169,930.80 × 83,738.40
  4. Step 4: Simplify right side
    113,481.60x = 14,229,733,302.72
  5. Step 5: Solve for x
    x = 14,229,733,302.72/113,481.60
  6. Step 6: Final answer
    x = 125,392.43

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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.