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Finding the Fourth Proportional to 100,377.34, 138,515.34 and 57,933.34

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Solution

The fourth proportional to 100,377.34, 138,515.34 and 57,933.34 is: 79,944.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,377.34 : 138,515.34 = 57,933.34 : x
  2. Step 2: Convert to fraction form
    100,377.34/138,515.34 = 57,933.34/x
  3. Step 3: Cross multiply
    100,377.34x = 138,515.34 × 57,933.34
  4. Step 4: Simplify right side
    100,377.34x = 8,024,656,287.44
  5. Step 5: Solve for x
    x = 8,024,656,287.44/100,377.34
  6. Step 6: Final answer
    x = 79,944.90

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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.