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Finding the Fourth Proportional to 171,434.52, 257,053.26 and 91,373.88

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Solution

The fourth proportional to 171,434.52, 257,053.26 and 91,373.88 is: 137,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,434.52 : 257,053.26 = 91,373.88 : x
  2. Step 2: Convert to fraction form
    171,434.52/257,053.26 = 91,373.88/x
  3. Step 3: Cross multiply
    171,434.52x = 257,053.26 × 91,373.88
  4. Step 4: Simplify right side
    171,434.52x = 23,487,953,732.85
  5. Step 5: Solve for x
    x = 23,487,953,732.85/171,434.52
  6. Step 6: Final answer
    x = 137,008.31

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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.