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Finding the Fourth Proportional to 170,742.88, 256,126.70 and 65,561.85

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Solution

The fourth proportional to 170,742.88, 256,126.70 and 65,561.85 is: 98,347.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,742.88 : 256,126.70 = 65,561.85 : x
  2. Step 2: Convert to fraction form
    170,742.88/256,126.70 = 65,561.85/x
  3. Step 3: Cross multiply
    170,742.88x = 256,126.70 × 65,561.85
  4. Step 4: Simplify right side
    170,742.88x = 16,792,140,286.40
  5. Step 5: Solve for x
    x = 16,792,140,286.40/170,742.88
  6. Step 6: Final answer
    x = 98,347.53

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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.