Home / 149,413.39-206,190.51-81,430.42

Finding the Fourth Proportional to 149,413.39, 206,190.51 and 81,430.42

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Solution

The fourth proportional to 149,413.39, 206,190.51 and 81,430.42 is: 112,374.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,413.39 : 206,190.51 = 81,430.42 : x
  2. Step 2: Convert to fraction form
    149,413.39/206,190.51 = 81,430.42/x
  3. Step 3: Cross multiply
    149,413.39x = 206,190.51 × 81,430.42
  4. Step 4: Simplify right side
    149,413.39x = 16,790,179,829.31
  5. Step 5: Solve for x
    x = 16,790,179,829.31/149,413.39
  6. Step 6: Final answer
    x = 112,374.00

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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.