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Finding the Fourth Proportional to 107,519.70, 161,279.55 and 100,958.70

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Solution

The fourth proportional to 107,519.70, 161,279.55 and 100,958.70 is: 151,438.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,519.70 : 161,279.55 = 100,958.70 : x
  2. Step 2: Convert to fraction form
    107,519.70/161,279.55 = 100,958.70/x
  3. Step 3: Cross multiply
    107,519.70x = 161,279.55 × 100,958.70
  4. Step 4: Simplify right side
    107,519.70x = 16,282,573,704.59
  5. Step 5: Solve for x
    x = 16,282,573,704.59/107,519.70
  6. Step 6: Final answer
    x = 151,438.05

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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.