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Finding the Fourth Proportional to 100,614.15, 138,989.22 and 95,299.74

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Solution

The fourth proportional to 100,614.15, 138,989.22 and 95,299.74 is: 131,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,614.15 : 138,989.22 = 95,299.74 : x
  2. Step 2: Convert to fraction form
    100,614.15/138,989.22 = 95,299.74/x
  3. Step 3: Cross multiply
    100,614.15x = 138,989.22 × 95,299.74
  4. Step 4: Simplify right side
    100,614.15x = 13,245,636,171.43
  5. Step 5: Solve for x
    x = 13,245,636,171.43/100,614.15
  6. Step 6: Final answer
    x = 131,647.85

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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.