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Finding the Fourth Proportional to 188,418.43, 260,031.90 and 107,871.22

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Solution

The fourth proportional to 188,418.43, 260,031.90 and 107,871.22 is: 148,870.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,418.43 : 260,031.90 = 107,871.22 : x
  2. Step 2: Convert to fraction form
    188,418.43/260,031.90 = 107,871.22/x
  3. Step 3: Cross multiply
    188,418.43x = 260,031.90 × 107,871.22
  4. Step 4: Simplify right side
    188,418.43x = 28,049,958,291.92
  5. Step 5: Solve for x
    x = 28,049,958,291.92/188,418.43
  6. Step 6: Final answer
    x = 148,870.57

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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.