Home / 171,640.08-257,513.86-76,949.66

Finding the Fourth Proportional to 171,640.08, 257,513.86 and 76,949.66

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Solution

The fourth proportional to 171,640.08, 257,513.86 and 76,949.66 is: 115,448.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,640.08 : 257,513.86 = 76,949.66 : x
  2. Step 2: Convert to fraction form
    171,640.08/257,513.86 = 76,949.66/x
  3. Step 3: Cross multiply
    171,640.08x = 257,513.86 × 76,949.66
  4. Step 4: Simplify right side
    171,640.08x = 19,815,603,972.29
  5. Step 5: Solve for x
    x = 19,815,603,972.29/171,640.08
  6. Step 6: Final answer
    x = 115,448.58

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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.