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Finding the Fourth Proportional to 158,134.50, 218,296.86 and 100,850.67

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Solution

The fourth proportional to 158,134.50, 218,296.86 and 100,850.67 is: 139,219.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,134.50 : 218,296.86 = 100,850.67 : x
  2. Step 2: Convert to fraction form
    158,134.50/218,296.86 = 100,850.67/x
  3. Step 3: Cross multiply
    158,134.50x = 218,296.86 × 100,850.67
  4. Step 4: Simplify right side
    158,134.50x = 22,015,384,589.90
  5. Step 5: Solve for x
    x = 22,015,384,589.90/158,134.50
  6. Step 6: Final answer
    x = 139,219.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.