Home / 139,986.60-209,918.34-51,217.08

Finding the Fourth Proportional to 139,986.60, 209,918.34 and 51,217.08

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Solution

The fourth proportional to 139,986.60, 209,918.34 and 51,217.08 is: 76,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,986.60 : 209,918.34 = 51,217.08 : x
  2. Step 2: Convert to fraction form
    139,986.60/209,918.34 = 51,217.08/x
  3. Step 3: Cross multiply
    139,986.60x = 209,918.34 × 51,217.08
  4. Step 4: Simplify right side
    139,986.60x = 10,751,404,413.25
  5. Step 5: Solve for x
    x = 10,751,404,413.25/139,986.60
  6. Step 6: Final answer
    x = 76,803.10

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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.