Home / 140,820.78-194,331.40-76,288.53

Finding the Fourth Proportional to 140,820.78, 194,331.40 and 76,288.53

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Solution

The fourth proportional to 140,820.78, 194,331.40 and 76,288.53 is: 105,277.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,820.78 : 194,331.40 = 76,288.53 : x
  2. Step 2: Convert to fraction form
    140,820.78/194,331.40 = 76,288.53/x
  3. Step 3: Cross multiply
    140,820.78x = 194,331.40 × 76,288.53
  4. Step 4: Simplify right side
    140,820.78x = 14,825,257,805.99
  5. Step 5: Solve for x
    x = 14,825,257,805.99/140,820.78
  6. Step 6: Final answer
    x = 105,277.49

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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.