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Finding the Fourth Proportional to 96,680.40, 145,409.40 and 86,571.60

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Solution

The fourth proportional to 96,680.40, 145,409.40 and 86,571.60 is: 130,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,680.40 : 145,409.40 = 86,571.60 : x
  2. Step 2: Convert to fraction form
    96,680.40/145,409.40 = 86,571.60/x
  3. Step 3: Cross multiply
    96,680.40x = 145,409.40 × 86,571.60
  4. Step 4: Simplify right side
    96,680.40x = 12,588,324,413.04
  5. Step 5: Solve for x
    x = 12,588,324,413.04/96,680.40
  6. Step 6: Final answer
    x = 130,205.55

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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.