Home / 140,780.76-194,278.38-77,118.84

Finding the Fourth Proportional to 140,780.76, 194,278.38 and 77,118.84

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Solution

The fourth proportional to 140,780.76, 194,278.38 and 77,118.84 is: 106,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,780.76 : 194,278.38 = 77,118.84 : x
  2. Step 2: Convert to fraction form
    140,780.76/194,278.38 = 77,118.84/x
  3. Step 3: Cross multiply
    140,780.76x = 194,278.38 × 77,118.84
  4. Step 4: Simplify right side
    140,780.76x = 14,982,523,302.68
  5. Step 5: Solve for x
    x = 14,982,523,302.68/140,780.76
  6. Step 6: Final answer
    x = 106,424.51

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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.