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Finding the Fourth Proportional to 129,901.44, 194,830.20 and 36,385.68

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Solution

The fourth proportional to 129,901.44, 194,830.20 and 36,385.68 is: 54,572.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901.44 : 194,830.20 = 36,385.68 : x
  2. Step 2: Convert to fraction form
    129,901.44/194,830.20 = 36,385.68/x
  3. Step 3: Cross multiply
    129,901.44x = 194,830.20 × 36,385.68
  4. Step 4: Simplify right side
    129,901.44x = 7,089,029,311.54
  5. Step 5: Solve for x
    x = 7,089,029,311.54/129,901.44
  6. Step 6: Final answer
    x = 54,572.37

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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.