Home / 207,986.70-312,308.10-119,413.20

Finding the Fourth Proportional to 207,986.70, 312,308.10 and 119,413.20

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Solution

The fourth proportional to 207,986.70, 312,308.10 and 119,413.20 is: 179,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,986.70 : 312,308.10 = 119,413.20 : x
  2. Step 2: Convert to fraction form
    207,986.70/312,308.10 = 119,413.20/x
  3. Step 3: Cross multiply
    207,986.70x = 312,308.10 × 119,413.20
  4. Step 4: Simplify right side
    207,986.70x = 37,293,709,606.92
  5. Step 5: Solve for x
    x = 37,293,709,606.92/207,986.70
  6. Step 6: Final answer
    x = 179,308.15

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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.