Home / 109,412.20-164,118.30-102,413.80

Finding the Fourth Proportional to 109,412.20, 164,118.30 and 102,413.80

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Solution

The fourth proportional to 109,412.20, 164,118.30 and 102,413.80 is: 153,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,412.20 : 164,118.30 = 102,413.80 : x
  2. Step 2: Convert to fraction form
    109,412.20/164,118.30 = 102,413.80/x
  3. Step 3: Cross multiply
    109,412.20x = 164,118.30 × 102,413.80
  4. Step 4: Simplify right side
    109,412.20x = 16,807,978,752.54
  5. Step 5: Solve for x
    x = 16,807,978,752.54/109,412.20
  6. Step 6: Final answer
    x = 153,620.70

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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.