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Finding the Fourth Proportional to 101,136.36, 139,620.64 and 73,881.84

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Solution

The fourth proportional to 101,136.36, 139,620.64 and 73,881.84 is: 101,995.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,136.36 : 139,620.64 = 73,881.84 : x
  2. Step 2: Convert to fraction form
    101,136.36/139,620.64 = 73,881.84/x
  3. Step 3: Cross multiply
    101,136.36x = 139,620.64 × 73,881.84
  4. Step 4: Simplify right side
    101,136.36x = 10,315,429,477.21
  5. Step 5: Solve for x
    x = 10,315,429,477.21/101,136.36
  6. Step 6: Final answer
    x = 101,995.26

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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.