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Finding the Fourth Proportional to 138,364.55, 207,546.83 and 135,740.15

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Solution

The fourth proportional to 138,364.55, 207,546.83 and 135,740.15 is: 203,610.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,364.55 : 207,546.83 = 135,740.15 : x
  2. Step 2: Convert to fraction form
    138,364.55/207,546.83 = 135,740.15/x
  3. Step 3: Cross multiply
    138,364.55x = 207,546.83 × 135,740.15
  4. Step 4: Simplify right side
    138,364.55x = 28,172,437,157.52
  5. Step 5: Solve for x
    x = 28,172,437,157.52/138,364.55
  6. Step 6: Final answer
    x = 203,610.23

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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.