Home / 140,787.74-194,289.29-77,121.33

Finding the Fourth Proportional to 140,787.74, 194,289.29 and 77,121.33

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Solution

The fourth proportional to 140,787.74, 194,289.29 and 77,121.33 is: 106,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,787.74 : 194,289.29 = 77,121.33 : x
  2. Step 2: Convert to fraction form
    140,787.74/194,289.29 = 77,121.33/x
  3. Step 3: Cross multiply
    140,787.74x = 194,289.29 × 77,121.33
  4. Step 4: Simplify right side
    140,787.74x = 14,983,848,063.95
  5. Step 5: Solve for x
    x = 14,983,848,063.95/140,787.74
  6. Step 6: Final answer
    x = 106,428.65

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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.