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Finding the Fourth Proportional to 170,745.70, 256,118.55 and 108,691.30

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Solution

The fourth proportional to 170,745.70, 256,118.55 and 108,691.30 is: 163,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,745.70 : 256,118.55 = 108,691.30 : x
  2. Step 2: Convert to fraction form
    170,745.70/256,118.55 = 108,691.30/x
  3. Step 3: Cross multiply
    170,745.70x = 256,118.55 × 108,691.30
  4. Step 4: Simplify right side
    170,745.70x = 27,837,858,153.62
  5. Step 5: Solve for x
    x = 27,837,858,153.62/170,745.70
  6. Step 6: Final answer
    x = 163,036.95

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1.5x scale

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.