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Finding the Fourth Proportional to 188,463.64, 260,076.72 and 103,578.88

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Solution

The fourth proportional to 188,463.64, 260,076.72 and 103,578.88 is: 142,937.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,463.64 : 260,076.72 = 103,578.88 : x
  2. Step 2: Convert to fraction form
    188,463.64/260,076.72 = 103,578.88/x
  3. Step 3: Cross multiply
    188,463.64x = 260,076.72 × 103,578.88
  4. Step 4: Simplify right side
    188,463.64x = 26,938,455,371.67
  5. Step 5: Solve for x
    x = 26,938,455,371.67/188,463.64
  6. Step 6: Final answer
    x = 142,937.15

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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.