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Finding the Fourth Proportional to 171,299.94, 256,802.37 and 82,431.18

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Solution

The fourth proportional to 171,299.94, 256,802.37 and 82,431.18 is: 123,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,299.94 : 256,802.37 = 82,431.18 : x
  2. Step 2: Convert to fraction form
    171,299.94/256,802.37 = 82,431.18/x
  3. Step 3: Cross multiply
    171,299.94x = 256,802.37 × 82,431.18
  4. Step 4: Simplify right side
    171,299.94x = 21,168,522,385.90
  5. Step 5: Solve for x
    x = 21,168,522,385.90/171,299.94
  6. Step 6: Final answer
    x = 123,575.77

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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.