Home / 209,619.60-314,429.40-125,638.80

Finding the Fourth Proportional to 209,619.60, 314,429.40 and 125,638.80

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Solution

The fourth proportional to 209,619.60, 314,429.40 and 125,638.80 is: 188,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,619.60 : 314,429.40 = 125,638.80 : x
  2. Step 2: Convert to fraction form
    209,619.60/314,429.40 = 125,638.80/x
  3. Step 3: Cross multiply
    209,619.60x = 314,429.40 × 125,638.80
  4. Step 4: Simplify right side
    209,619.60x = 39,504,532,500.72
  5. Step 5: Solve for x
    x = 39,504,532,500.72/209,619.60
  6. Step 6: Final answer
    x = 188,458.20

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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.