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Finding the Fourth Proportional to 171,008.79, 256,374.77 and 71,243.93

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Solution

The fourth proportional to 171,008.79, 256,374.77 and 71,243.93 is: 106,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,008.79 : 256,374.77 = 71,243.93 : x
  2. Step 2: Convert to fraction form
    171,008.79/256,374.77 = 71,243.93/x
  3. Step 3: Cross multiply
    171,008.79x = 256,374.77 × 71,243.93
  4. Step 4: Simplify right side
    171,008.79x = 18,265,144,529.55
  5. Step 5: Solve for x
    x = 18,265,144,529.55/171,008.79
  6. Step 6: Final answer
    x = 106,808.22

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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.