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Finding the Fourth Proportional to 171,274.48, 256,985.58 and 71,454.34

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Solution

The fourth proportional to 171,274.48, 256,985.58 and 71,454.34 is: 107,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,274.48 : 256,985.58 = 71,454.34 : x
  2. Step 2: Convert to fraction form
    171,274.48/256,985.58 = 71,454.34/x
  3. Step 3: Cross multiply
    171,274.48x = 256,985.58 × 71,454.34
  4. Step 4: Simplify right side
    171,274.48x = 18,362,735,008.42
  5. Step 5: Solve for x
    x = 18,362,735,008.42/171,274.48
  6. Step 6: Final answer
    x = 107,212.32

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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.