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Finding the Fourth Proportional to 157,989.69, 236,936.34 and 83,069.19

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Solution

The fourth proportional to 157,989.69, 236,936.34 and 83,069.19 is: 124,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,989.69 : 236,936.34 = 83,069.19 : x
  2. Step 2: Convert to fraction form
    157,989.69/236,936.34 = 83,069.19/x
  3. Step 3: Cross multiply
    157,989.69x = 236,936.34 × 83,069.19
  4. Step 4: Simplify right side
    157,989.69x = 19,682,109,845.36
  5. Step 5: Solve for x
    x = 19,682,109,845.36/157,989.69
  6. Step 6: Final answer
    x = 124,578.44

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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.