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Finding the Fourth Proportional to 171,394.52, 257,258.03 and 82,710.45

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Solution

The fourth proportional to 171,394.52, 257,258.03 and 82,710.45 is: 124,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,394.52 : 257,258.03 = 82,710.45 : x
  2. Step 2: Convert to fraction form
    171,394.52/257,258.03 = 82,710.45/x
  3. Step 3: Cross multiply
    171,394.52x = 257,258.03 × 82,710.45
  4. Step 4: Simplify right side
    171,394.52x = 21,277,927,013.86
  5. Step 5: Solve for x
    x = 21,277,927,013.86/171,394.52
  6. Step 6: Final answer
    x = 124,145.90

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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.