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Finding the Fourth Proportional to 126,999.80, 190,413.30 and 60,471.80

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Solution

The fourth proportional to 126,999.80, 190,413.30 and 60,471.80 is: 90,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,999.80 : 190,413.30 = 60,471.80 : x
  2. Step 2: Convert to fraction form
    126,999.80/190,413.30 = 60,471.80/x
  3. Step 3: Cross multiply
    126,999.80x = 190,413.30 × 60,471.80
  4. Step 4: Simplify right side
    126,999.80x = 11,514,634,994.94
  5. Step 5: Solve for x
    x = 11,514,634,994.94/126,999.80
  6. Step 6: Final answer
    x = 90,666.56

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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.