Home / 213,740.40-320,173.20-108,618.60

Finding the Fourth Proportional to 213,740.40, 320,173.20 and 108,618.60

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Solution

The fourth proportional to 213,740.40, 320,173.20 and 108,618.60 is: 162,705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,740.40 : 320,173.20 = 108,618.60 : x
  2. Step 2: Convert to fraction form
    213,740.40/320,173.20 = 108,618.60/x
  3. Step 3: Cross multiply
    213,740.40x = 320,173.20 × 108,618.60
  4. Step 4: Simplify right side
    213,740.40x = 34,776,764,741.52
  5. Step 5: Solve for x
    x = 34,776,764,741.52/213,740.40
  6. Step 6: Final answer
    x = 162,705.62

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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.