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Finding the Fourth Proportional to 171,638.81, 236,874.03 and 103,672.32

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Solution

The fourth proportional to 171,638.81, 236,874.03 and 103,672.32 is: 143,075.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,638.81 : 236,874.03 = 103,672.32 : x
  2. Step 2: Convert to fraction form
    171,638.81/236,874.03 = 103,672.32/x
  3. Step 3: Cross multiply
    171,638.81x = 236,874.03 × 103,672.32
  4. Step 4: Simplify right side
    171,638.81x = 24,557,280,237.85
  5. Step 5: Solve for x
    x = 24,557,280,237.85/171,638.81
  6. Step 6: Final answer
    x = 143,075.33

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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.