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Finding the Fourth Proportional to 171,235.54, 256,855.04 and 76,470.55

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Solution

The fourth proportional to 171,235.54, 256,855.04 and 76,470.55 is: 114,706.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,235.54 : 256,855.04 = 76,470.55 : x
  2. Step 2: Convert to fraction form
    171,235.54/256,855.04 = 76,470.55/x
  3. Step 3: Cross multiply
    171,235.54x = 256,855.04 × 76,470.55
  4. Step 4: Simplify right side
    171,235.54x = 19,641,845,441.35
  5. Step 5: Solve for x
    x = 19,641,845,441.35/171,235.54
  6. Step 6: Final answer
    x = 114,706.59

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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.