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Finding the Fourth Proportional to 104,843.70, 157,265.55 and 81,486.90

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Solution

The fourth proportional to 104,843.70, 157,265.55 and 81,486.90 is: 122,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,843.70 : 157,265.55 = 81,486.90 : x
  2. Step 2: Convert to fraction form
    104,843.70/157,265.55 = 81,486.90/x
  3. Step 3: Cross multiply
    104,843.70x = 157,265.55 × 81,486.90
  4. Step 4: Simplify right side
    104,843.70x = 12,815,082,146.30
  5. Step 5: Solve for x
    x = 12,815,082,146.30/104,843.70
  6. Step 6: Final answer
    x = 122,230.35

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1.5x scale

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.