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Finding the Fourth Proportional to 123,745.32, 170,639.46 and 73,434.60

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Solution

The fourth proportional to 123,745.32, 170,639.46 and 73,434.60 is: 101,263.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,745.32 : 170,639.46 = 73,434.60 : x
  2. Step 2: Convert to fraction form
    123,745.32/170,639.46 = 73,434.60/x
  3. Step 3: Cross multiply
    123,745.32x = 170,639.46 × 73,434.60
  4. Step 4: Simplify right side
    123,745.32x = 12,530,840,489.32
  5. Step 5: Solve for x
    x = 12,530,840,489.32/123,745.32
  6. Step 6: Final answer
    x = 101,263.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.