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Finding the Fourth Proportional to 113,753.56, 170,497.49 and 85,583.12

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Solution

The fourth proportional to 113,753.56, 170,497.49 and 85,583.12 is: 128,274.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,753.56 : 170,497.49 = 85,583.12 : x
  2. Step 2: Convert to fraction form
    113,753.56/170,497.49 = 85,583.12/x
  3. Step 3: Cross multiply
    113,753.56x = 170,497.49 × 85,583.12
  4. Step 4: Simplify right side
    113,753.56x = 14,591,707,427.71
  5. Step 5: Solve for x
    x = 14,591,707,427.71/113,753.56
  6. Step 6: Final answer
    x = 128,274.73

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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.