Home / 259,653.12-389,440.70-82,137.06

Finding the Fourth Proportional to 259,653.12, 389,440.70 and 82,137.06

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Solution

The fourth proportional to 259,653.12, 389,440.70 and 82,137.06 is: 123,193.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,653.12 : 389,440.70 = 82,137.06 : x
  2. Step 2: Convert to fraction form
    259,653.12/389,440.70 = 82,137.06/x
  3. Step 3: Cross multiply
    259,653.12x = 389,440.70 × 82,137.06
  4. Step 4: Simplify right side
    259,653.12x = 31,987,514,142.34
  5. Step 5: Solve for x
    x = 31,987,514,142.34/259,653.12
  6. Step 6: Final answer
    x = 123,193.26

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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.