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Finding the Fourth Proportional to 171,342.48, 257,042.89 and 85,994.04

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Solution

The fourth proportional to 171,342.48, 257,042.89 and 85,994.04 is: 129,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,342.48 : 257,042.89 = 85,994.04 : x
  2. Step 2: Convert to fraction form
    171,342.48/257,042.89 = 85,994.04/x
  3. Step 3: Cross multiply
    171,342.48x = 257,042.89 × 85,994.04
  4. Step 4: Simplify right side
    171,342.48x = 22,104,155,889.57
  5. Step 5: Solve for x
    x = 22,104,155,889.57/171,342.48
  6. Step 6: Final answer
    x = 129,005.70

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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.