Home / 149,256,120.78-205,970,646.87-83,175,163.38

Finding the Fourth Proportional to 149,256,120.78, 205,970,646.87 and 83,175,163.38

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Solution

The fourth proportional to 149,256,120.78, 205,970,646.87 and 83,175,163.38 is: 114,780,165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,256,120.78 : 205,970,646.87 = 83,175,163.38 : x
  2. Step 2: Convert to fraction form
    149,256,120.78/205,970,646.87 = 83,175,163.38/x
  3. Step 3: Cross multiply
    149,256,120.78x = 205,970,646.87 × 83,175,163.38
  4. Step 4: Simplify right side
    149,256,120.78x = 17,131,642,204,896,536
  5. Step 5: Solve for x
    x = 17,131,642,204,896,536/149,256,120.78
  6. Step 6: Final answer
    x = 114,780,165.23

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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.