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Finding the Fourth Proportional to 169,605.16, 254,413.14 and 85,319.26

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Solution

The fourth proportional to 169,605.16, 254,413.14 and 85,319.26 is: 127,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,605.16 : 254,413.14 = 85,319.26 : x
  2. Step 2: Convert to fraction form
    169,605.16/254,413.14 = 85,319.26/x
  3. Step 3: Cross multiply
    169,605.16x = 254,413.14 × 85,319.26
  4. Step 4: Simplify right side
    169,605.16x = 21,706,340,839.08
  5. Step 5: Solve for x
    x = 21,706,340,839.08/169,605.16
  6. Step 6: Final answer
    x = 127,981.61

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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.