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Finding the Fourth Proportional to 101,517.45, 151,956.30 and 90,818.91

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Solution

The fourth proportional to 101,517.45, 151,956.30 and 90,818.91 is: 135,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,517.45 : 151,956.30 = 90,818.91 : x
  2. Step 2: Convert to fraction form
    101,517.45/151,956.30 = 90,818.91/x
  3. Step 3: Cross multiply
    101,517.45x = 151,956.30 × 90,818.91
  4. Step 4: Simplify right side
    101,517.45x = 13,800,505,533.63
  5. Step 5: Solve for x
    x = 13,800,505,533.63/101,517.45
  6. Step 6: Final answer
    x = 135,942.20

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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.