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Finding the Fourth Proportional to 109,413.20, 164,119.80 and 107,663.60

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Solution

The fourth proportional to 109,413.20, 164,119.80 and 107,663.60 is: 161,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,413.20 : 164,119.80 = 107,663.60 : x
  2. Step 2: Convert to fraction form
    109,413.20/164,119.80 = 107,663.60/x
  3. Step 3: Cross multiply
    109,413.20x = 164,119.80 × 107,663.60
  4. Step 4: Simplify right side
    109,413.20x = 17,669,728,499.28
  5. Step 5: Solve for x
    x = 17,669,728,499.28/109,413.20
  6. Step 6: Final answer
    x = 161,495.40

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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.