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Finding the Fourth Proportional to 109,161.10, 150,630.13 and 61,413.42

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Solution

The fourth proportional to 109,161.10, 150,630.13 and 61,413.42 is: 84,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,161.10 : 150,630.13 = 61,413.42 : x
  2. Step 2: Convert to fraction form
    109,161.10/150,630.13 = 61,413.42/x
  3. Step 3: Cross multiply
    109,161.10x = 150,630.13 × 61,413.42
  4. Step 4: Simplify right side
    109,161.10x = 9,250,712,079.97
  5. Step 5: Solve for x
    x = 9,250,712,079.97/109,161.10
  6. Step 6: Final answer
    x = 84,743.67

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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.