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Finding the Fourth Proportional to 170,223.64, 255,352.38 and 65,131

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Solution

The fourth proportional to 170,223.64, 255,352.38 and 65,131 is: 97,702.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,223.64 : 255,352.38 = 65,131 : x
  2. Step 2: Convert to fraction form
    170,223.64/255,352.38 = 65,131/x
  3. Step 3: Cross multiply
    170,223.64x = 255,352.38 × 65,131
  4. Step 4: Simplify right side
    170,223.64x = 16,631,355,861.78
  5. Step 5: Solve for x
    x = 16,631,355,861.78/170,223.64
  6. Step 6: Final answer
    x = 97,702.97

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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.