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Finding the Fourth Proportional to 188,987.78, 260,803.08 and 104,106.62

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Solution

The fourth proportional to 188,987.78, 260,803.08 and 104,106.62 is: 143,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,987.78 : 260,803.08 = 104,106.62 : x
  2. Step 2: Convert to fraction form
    188,987.78/260,803.08 = 104,106.62/x
  3. Step 3: Cross multiply
    188,987.78x = 260,803.08 × 104,106.62
  4. Step 4: Simplify right side
    188,987.78x = 27,151,327,144.39
  5. Step 5: Solve for x
    x = 27,151,327,144.39/188,987.78
  6. Step 6: Final answer
    x = 143,667.10

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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.