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Finding the Fourth Proportional to 114,426.70, 171,640.05 and 103,540.30

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Solution

The fourth proportional to 114,426.70, 171,640.05 and 103,540.30 is: 155,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,426.70 : 171,640.05 = 103,540.30 : x
  2. Step 2: Convert to fraction form
    114,426.70/171,640.05 = 103,540.30/x
  3. Step 3: Cross multiply
    114,426.70x = 171,640.05 × 103,540.30
  4. Step 4: Simplify right side
    114,426.70x = 17,771,662,269.02
  5. Step 5: Solve for x
    x = 17,771,662,269.02/114,426.70
  6. Step 6: Final answer
    x = 155,310.45

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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.