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Finding the Fourth Proportional to 171,064.55, 256,522.56 and 65,809.64

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Solution

The fourth proportional to 171,064.55, 256,522.56 and 65,809.64 is: 98,685.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,064.55 : 256,522.56 = 65,809.64 : x
  2. Step 2: Convert to fraction form
    171,064.55/256,522.56 = 65,809.64/x
  3. Step 3: Cross multiply
    171,064.55x = 256,522.56 × 65,809.64
  4. Step 4: Simplify right side
    171,064.55x = 16,881,656,042.87
  5. Step 5: Solve for x
    x = 16,881,656,042.87/171,064.55
  6. Step 6: Final answer
    x = 98,685.89

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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.