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Finding the Fourth Proportional to 171,118.30, 256,721.19 and 65,909.02

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Solution

The fourth proportional to 171,118.30, 256,721.19 and 65,909.02 is: 98,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,118.30 : 256,721.19 = 65,909.02 : x
  2. Step 2: Convert to fraction form
    171,118.30/256,721.19 = 65,909.02/x
  3. Step 3: Cross multiply
    171,118.30x = 256,721.19 × 65,909.02
  4. Step 4: Simplify right side
    171,118.30x = 16,920,242,046.13
  5. Step 5: Solve for x
    x = 16,920,242,046.13/171,118.30
  6. Step 6: Final answer
    x = 98,880.38

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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.