Home / 100,376.70-150,565.05-76,757.10

Finding the Fourth Proportional to 100,376.70, 150,565.05 and 76,757.10

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Solution

The fourth proportional to 100,376.70, 150,565.05 and 76,757.10 is: 115,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,376.70 : 150,565.05 = 76,757.10 : x
  2. Step 2: Convert to fraction form
    100,376.70/150,565.05 = 76,757.10/x
  3. Step 3: Cross multiply
    100,376.70x = 150,565.05 × 76,757.10
  4. Step 4: Simplify right side
    100,376.70x = 11,556,936,599.36
  5. Step 5: Solve for x
    x = 11,556,936,599.36/100,376.70
  6. Step 6: Final answer
    x = 115,135.65

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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.