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Finding the Fourth Proportional to 114,626.60, 171,939.90 and 89,743.40

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Solution

The fourth proportional to 114,626.60, 171,939.90 and 89,743.40 is: 134,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,626.60 : 171,939.90 = 89,743.40 : x
  2. Step 2: Convert to fraction form
    114,626.60/171,939.90 = 89,743.40/x
  3. Step 3: Cross multiply
    114,626.60x = 171,939.90 × 89,743.40
  4. Step 4: Simplify right side
    114,626.60x = 15,430,471,221.66
  5. Step 5: Solve for x
    x = 15,430,471,221.66/114,626.60
  6. Step 6: Final answer
    x = 134,615.10

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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.