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Finding the Fourth Proportional to 170,812.80, 256,413.60 and 100,731.60

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Solution

The fourth proportional to 170,812.80, 256,413.60 and 100,731.60 is: 151,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,812.80 : 256,413.60 = 100,731.60 : x
  2. Step 2: Convert to fraction form
    170,812.80/256,413.60 = 100,731.60/x
  3. Step 3: Cross multiply
    170,812.80x = 256,413.60 × 100,731.60
  4. Step 4: Simplify right side
    170,812.80x = 25,828,952,189.76
  5. Step 5: Solve for x
    x = 25,828,952,189.76/170,812.80
  6. Step 6: Final answer
    x = 151,212.04

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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.