Home / 129,653.20-194,455.80-36,139.60

Finding the Fourth Proportional to 129,653.20, 194,455.80 and 36,139.60

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Solution

The fourth proportional to 129,653.20, 194,455.80 and 36,139.60 is: 54,202.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,653.20 : 194,455.80 = 36,139.60 : x
  2. Step 2: Convert to fraction form
    129,653.20/194,455.80 = 36,139.60/x
  3. Step 3: Cross multiply
    129,653.20x = 194,455.80 × 36,139.60
  4. Step 4: Simplify right side
    129,653.20x = 7,027,554,829.68
  5. Step 5: Solve for x
    x = 7,027,554,829.68/129,653.20
  6. Step 6: Final answer
    x = 54,202.71

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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.