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Finding the Fourth Proportional to 188,871.67, 260,564.81 and 112,375.47

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Solution

The fourth proportional to 188,871.67, 260,564.81 and 112,375.47 is: 155,031.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,871.67 : 260,564.81 = 112,375.47 : x
  2. Step 2: Convert to fraction form
    188,871.67/260,564.81 = 112,375.47/x
  3. Step 3: Cross multiply
    188,871.67x = 260,564.81 × 112,375.47
  4. Step 4: Simplify right side
    188,871.67x = 29,281,092,989.21
  5. Step 5: Solve for x
    x = 29,281,092,989.21/188,871.67
  6. Step 6: Final answer
    x = 155,031.68

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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.