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Finding the Fourth Proportional to 188,507.43, 260,140.28 and 107,961.66

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Solution

The fourth proportional to 188,507.43, 260,140.28 and 107,961.66 is: 148,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,507.43 : 260,140.28 = 107,961.66 : x
  2. Step 2: Convert to fraction form
    188,507.43/260,140.28 = 107,961.66/x
  3. Step 3: Cross multiply
    188,507.43x = 260,140.28 × 107,961.66
  4. Step 4: Simplify right side
    188,507.43x = 28,085,175,921.86
  5. Step 5: Solve for x
    x = 28,085,175,921.86/188,507.43
  6. Step 6: Final answer
    x = 148,987.10

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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.