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Finding the Fourth Proportional to 171,303.92, 256,786.35 and 81,188.24

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Solution

The fourth proportional to 171,303.92, 256,786.35 and 81,188.24 is: 121,702.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,303.92 : 256,786.35 = 81,188.24 : x
  2. Step 2: Convert to fraction form
    171,303.92/256,786.35 = 81,188.24/x
  3. Step 3: Cross multiply
    171,303.92x = 256,786.35 × 81,188.24
  4. Step 4: Simplify right side
    171,303.92x = 20,848,030,528.59
  5. Step 5: Solve for x
    x = 20,848,030,528.59/171,303.92
  6. Step 6: Final answer
    x = 121,702.01

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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.