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Finding the Fourth Proportional to 191,983.20, 288,061.20 and 67,413.60

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Solution

The fourth proportional to 191,983.20, 288,061.20 and 67,413.60 is: 101,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,983.20 : 288,061.20 = 67,413.60 : x
  2. Step 2: Convert to fraction form
    191,983.20/288,061.20 = 67,413.60/x
  3. Step 3: Cross multiply
    191,983.20x = 288,061.20 × 67,413.60
  4. Step 4: Simplify right side
    191,983.20x = 19,419,242,512.32
  5. Step 5: Solve for x
    x = 19,419,242,512.32/191,983.20
  6. Step 6: Final answer
    x = 101,150.74

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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.