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Finding the Fourth Proportional to 188,796.64, 260,533.92 and 103,911.88

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Solution

The fourth proportional to 188,796.64, 260,533.92 and 103,911.88 is: 143,395.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,796.64 : 260,533.92 = 103,911.88 : x
  2. Step 2: Convert to fraction form
    188,796.64/260,533.92 = 103,911.88/x
  3. Step 3: Cross multiply
    188,796.64x = 260,533.92 × 103,911.88
  4. Step 4: Simplify right side
    188,796.64x = 27,072,569,430.97
  5. Step 5: Solve for x
    x = 27,072,569,430.97/188,796.64
  6. Step 6: Final answer
    x = 143,395.40

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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.