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Finding the Fourth Proportional to 90,296.40, 135,496.44 and 70,519.44

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Solution

The fourth proportional to 90,296.40, 135,496.44 and 70,519.44 is: 105,819.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,296.40 : 135,496.44 = 70,519.44 : x
  2. Step 2: Convert to fraction form
    90,296.40/135,496.44 = 70,519.44/x
  3. Step 3: Cross multiply
    90,296.40x = 135,496.44 × 70,519.44
  4. Step 4: Simplify right side
    90,296.40x = 9,555,133,070.79
  5. Step 5: Solve for x
    x = 9,555,133,070.79/90,296.40
  6. Step 6: Final answer
    x = 105,819.65

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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.