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Finding the Fourth Proportional to 188,981, 260,793.78 and 104,097.86

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Solution

The fourth proportional to 188,981, 260,793.78 and 104,097.86 is: 143,655.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,981 : 260,793.78 = 104,097.86 : x
  2. Step 2: Convert to fraction form
    188,981/260,793.78 = 104,097.86/x
  3. Step 3: Cross multiply
    188,981x = 260,793.78 × 104,097.86
  4. Step 4: Simplify right side
    188,981x = 27,148,074,399.31
  5. Step 5: Solve for x
    x = 27,148,074,399.31/188,981
  6. Step 6: Final answer
    x = 143,655.05

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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.