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Finding the Fourth Proportional to 188,463.45, 260,076.54 and 103,578.69

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Solution

The fourth proportional to 188,463.45, 260,076.54 and 103,578.69 is: 142,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,463.45 : 260,076.54 = 103,578.69 : x
  2. Step 2: Convert to fraction form
    188,463.45/260,076.54 = 103,578.69/x
  3. Step 3: Cross multiply
    188,463.45x = 260,076.54 × 103,578.69
  4. Step 4: Simplify right side
    188,463.45x = 26,938,387,571.88
  5. Step 5: Solve for x
    x = 26,938,387,571.88/188,463.45
  6. Step 6: Final answer
    x = 142,936.93

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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.