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Finding the Fourth Proportional to 114,360.20, 171,540.30 and 77,035.40

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Solution

The fourth proportional to 114,360.20, 171,540.30 and 77,035.40 is: 115,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,360.20 : 171,540.30 = 77,035.40 : x
  2. Step 2: Convert to fraction form
    114,360.20/171,540.30 = 77,035.40/x
  3. Step 3: Cross multiply
    114,360.20x = 171,540.30 × 77,035.40
  4. Step 4: Simplify right side
    114,360.20x = 13,214,675,626.62
  5. Step 5: Solve for x
    x = 13,214,675,626.62/114,360.20
  6. Step 6: Final answer
    x = 115,553.10

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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.