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Finding the Fourth Proportional to 188,468.84, 260,101.86 and 107,921.72

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Solution

The fourth proportional to 188,468.84, 260,101.86 and 107,921.72 is: 148,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,468.84 : 260,101.86 = 107,921.72 : x
  2. Step 2: Convert to fraction form
    188,468.84/260,101.86 = 107,921.72/x
  3. Step 3: Cross multiply
    188,468.84x = 260,101.86 × 107,921.72
  4. Step 4: Simplify right side
    188,468.84x = 28,070,640,106.40
  5. Step 5: Solve for x
    x = 28,070,640,106.40/188,468.84
  6. Step 6: Final answer
    x = 148,940.48

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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.