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Finding the Fourth Proportional to 171,395.80, 257,022.66 and 64,761.34

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Solution

The fourth proportional to 171,395.80, 257,022.66 and 64,761.34 is: 97,115.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,395.80 : 257,022.66 = 64,761.34 : x
  2. Step 2: Convert to fraction form
    171,395.80/257,022.66 = 64,761.34/x
  3. Step 3: Cross multiply
    171,395.80x = 257,022.66 × 64,761.34
  4. Step 4: Simplify right side
    171,395.80x = 16,645,131,871.96
  5. Step 5: Solve for x
    x = 16,645,131,871.96/171,395.80
  6. Step 6: Final answer
    x = 97,115.17

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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.