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Finding the Fourth Proportional to 145,608.80, 218,413.20 and 115,865.60

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Solution

The fourth proportional to 145,608.80, 218,413.20 and 115,865.60 is: 173,798.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,608.80 : 218,413.20 = 115,865.60 : x
  2. Step 2: Convert to fraction form
    145,608.80/218,413.20 = 115,865.60/x
  3. Step 3: Cross multiply
    145,608.80x = 218,413.20 × 115,865.60
  4. Step 4: Simplify right side
    145,608.80x = 25,306,576,465.92
  5. Step 5: Solve for x
    x = 25,306,576,465.92/145,608.80
  6. Step 6: Final answer
    x = 173,798.40

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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.