Home / 168,085.72-231,955.16-91,605.44

Finding the Fourth Proportional to 168,085.72, 231,955.16 and 91,605.44

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Solution

The fourth proportional to 168,085.72, 231,955.16 and 91,605.44 is: 126,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,085.72 : 231,955.16 = 91,605.44 : x
  2. Step 2: Convert to fraction form
    168,085.72/231,955.16 = 91,605.44/x
  3. Step 3: Cross multiply
    168,085.72x = 231,955.16 × 91,605.44
  4. Step 4: Simplify right side
    168,085.72x = 21,248,354,492.07
  5. Step 5: Solve for x
    x = 21,248,354,492.07/168,085.72
  6. Step 6: Final answer
    x = 126,413.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.