Home / 100,721.96-151,078.94-40,776.36

Finding the Fourth Proportional to 100,721.96, 151,078.94 and 40,776.36

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Solution

The fourth proportional to 100,721.96, 151,078.94 and 40,776.36 is: 61,162.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,721.96 : 151,078.94 = 40,776.36 : x
  2. Step 2: Convert to fraction form
    100,721.96/151,078.94 = 40,776.36/x
  3. Step 3: Cross multiply
    100,721.96x = 151,078.94 × 40,776.36
  4. Step 4: Simplify right side
    100,721.96x = 6,160,449,245.86
  5. Step 5: Solve for x
    x = 6,160,449,245.86/100,721.96
  6. Step 6: Final answer
    x = 61,162.92

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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.