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Finding the Fourth Proportional to 138,601, 207,914.46 and 45,081.64

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Solution

The fourth proportional to 138,601, 207,914.46 and 45,081.64 is: 67,626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,601 : 207,914.46 = 45,081.64 : x
  2. Step 2: Convert to fraction form
    138,601/207,914.46 = 45,081.64/x
  3. Step 3: Cross multiply
    138,601x = 207,914.46 × 45,081.64
  4. Step 4: Simplify right side
    138,601x = 9,373,124,836.51
  5. Step 5: Solve for x
    x = 9,373,124,836.51/138,601
  6. Step 6: Final answer
    x = 67,626.68

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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.