Home / 90,517.24-135,166.31-73,909.67

Finding the Fourth Proportional to 90,517.24, 135,166.31 and 73,909.67

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Solution

The fourth proportional to 90,517.24, 135,166.31 and 73,909.67 is: 110,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,517.24 : 135,166.31 = 73,909.67 : x
  2. Step 2: Convert to fraction form
    90,517.24/135,166.31 = 73,909.67/x
  3. Step 3: Cross multiply
    90,517.24x = 135,166.31 × 73,909.67
  4. Step 4: Simplify right side
    90,517.24x = 9,990,097,889.91
  5. Step 5: Solve for x
    x = 9,990,097,889.91/90,517.24
  6. Step 6: Final answer
    x = 110,366.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.