Home / 129,374.48-194,050.61-78,760.37

Finding the Fourth Proportional to 129,374.48, 194,050.61 and 78,760.37

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Solution

The fourth proportional to 129,374.48, 194,050.61 and 78,760.37 is: 118,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,374.48 : 194,050.61 = 78,760.37 : x
  2. Step 2: Convert to fraction form
    129,374.48/194,050.61 = 78,760.37/x
  3. Step 3: Cross multiply
    129,374.48x = 194,050.61 × 78,760.37
  4. Step 4: Simplify right side
    129,374.48x = 15,283,497,842.33
  5. Step 5: Solve for x
    x = 15,283,497,842.33/129,374.48
  6. Step 6: Final answer
    x = 118,133.79

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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.