Home / 100,720.96-151,077.44-40,775.36

Finding the Fourth Proportional to 100,720.96, 151,077.44 and 40,775.36

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Solution

The fourth proportional to 100,720.96, 151,077.44 and 40,775.36 is: 61,161.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,720.96 : 151,077.44 = 40,775.36 : x
  2. Step 2: Convert to fraction form
    100,720.96/151,077.44 = 40,775.36/x
  3. Step 3: Cross multiply
    100,720.96x = 151,077.44 × 40,775.36
  4. Step 4: Simplify right side
    100,720.96x = 6,160,237,003.88
  5. Step 5: Solve for x
    x = 6,160,237,003.88/100,720.96
  6. Step 6: Final answer
    x = 61,161.42

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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.