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Finding the Fourth Proportional to 81,514.70, 113,887.30 and 81,514.70

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Solution

The fourth proportional to 81,514.70, 113,887.30 and 81,514.70 is: 113,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,514.70 : 113,887.30 = 81,514.70 : x
  2. Step 2: Convert to fraction form
    81,514.70/113,887.30 = 81,514.70/x
  3. Step 3: Cross multiply
    81,514.70x = 113,887.30 × 81,514.70
  4. Step 4: Simplify right side
    81,514.70x = 9,283,489,093.31
  5. Step 5: Solve for x
    x = 9,283,489,093.31/81,514.70
  6. Step 6: Final answer
    x = 113,887.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.