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Finding the Fourth Proportional to 188,505.63, 260,131.17 and 103,622.09

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Solution

The fourth proportional to 188,505.63, 260,131.17 and 103,622.09 is: 142,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,505.63 : 260,131.17 = 103,622.09 : x
  2. Step 2: Convert to fraction form
    188,505.63/260,131.17 = 103,622.09/x
  3. Step 3: Cross multiply
    188,505.63x = 260,131.17 × 103,622.09
  4. Step 4: Simplify right side
    188,505.63x = 26,955,334,208.89
  5. Step 5: Solve for x
    x = 26,955,334,208.89/188,505.63
  6. Step 6: Final answer
    x = 142,994.85

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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.