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Finding the Fourth Proportional to 145,951.38, 201,413.25 and 78,883.38

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Solution

The fourth proportional to 145,951.38, 201,413.25 and 78,883.38 is: 108,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,951.38 : 201,413.25 = 78,883.38 : x
  2. Step 2: Convert to fraction form
    145,951.38/201,413.25 = 78,883.38/x
  3. Step 3: Cross multiply
    145,951.38x = 201,413.25 × 78,883.38
  4. Step 4: Simplify right side
    145,951.38x = 15,888,157,936.79
  5. Step 5: Solve for x
    x = 15,888,157,936.79/145,951.38
  6. Step 6: Final answer
    x = 108,859.25

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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.