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Finding the Fourth Proportional to 125,411.82, 188,135.38 and 36,672

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Solution

The fourth proportional to 125,411.82, 188,135.38 and 36,672 is: 55,013.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,411.82 : 188,135.38 = 36,672 : x
  2. Step 2: Convert to fraction form
    125,411.82/188,135.38 = 36,672/x
  3. Step 3: Cross multiply
    125,411.82x = 188,135.38 × 36,672
  4. Step 4: Simplify right side
    125,411.82x = 6,899,300,655.36
  5. Step 5: Solve for x
    x = 6,899,300,655.36/125,411.82
  6. Step 6: Final answer
    x = 55,013.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.