Home / 140,821.78-194,332.78-76,289.53

Finding the Fourth Proportional to 140,821.78, 194,332.78 and 76,289.53

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Solution

The fourth proportional to 140,821.78, 194,332.78 and 76,289.53 is: 105,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,821.78 : 194,332.78 = 76,289.53 : x
  2. Step 2: Convert to fraction form
    140,821.78/194,332.78 = 76,289.53/x
  3. Step 3: Cross multiply
    140,821.78x = 194,332.78 × 76,289.53
  4. Step 4: Simplify right side
    140,821.78x = 14,825,556,449.79
  5. Step 5: Solve for x
    x = 14,825,556,449.79/140,821.78
  6. Step 6: Final answer
    x = 105,278.86

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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.