Home / 90,742.92-135,927.11-53,188.95

Finding the Fourth Proportional to 90,742.92, 135,927.11 and 53,188.95

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Solution

The fourth proportional to 90,742.92, 135,927.11 and 53,188.95 is: 79,673.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.92 : 135,927.11 = 53,188.95 : x
  2. Step 2: Convert to fraction form
    90,742.92/135,927.11 = 53,188.95/x
  3. Step 3: Cross multiply
    90,742.92x = 135,927.11 × 53,188.95
  4. Step 4: Simplify right side
    90,742.92x = 7,229,820,900.13
  5. Step 5: Solve for x
    x = 7,229,820,900.13/90,742.92
  6. Step 6: Final answer
    x = 79,673.67

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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.