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Finding the Fourth Proportional to 171,110.88, 256,491.36 and 65,888.64

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Solution

The fourth proportional to 171,110.88, 256,491.36 and 65,888.64 is: 98,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,110.88 : 256,491.36 = 65,888.64 : x
  2. Step 2: Convert to fraction form
    171,110.88/256,491.36 = 65,888.64/x
  3. Step 3: Cross multiply
    171,110.88x = 256,491.36 × 65,888.64
  4. Step 4: Simplify right side
    171,110.88x = 16,899,866,882.15
  5. Step 5: Solve for x
    x = 16,899,866,882.15/171,110.88
  6. Step 6: Final answer
    x = 98,765.59

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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.