Home / 209,979.60-314,969.40-125,998.80

Finding the Fourth Proportional to 209,979.60, 314,969.40 and 125,998.80

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Solution

The fourth proportional to 209,979.60, 314,969.40 and 125,998.80 is: 188,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,979.60 : 314,969.40 = 125,998.80 : x
  2. Step 2: Convert to fraction form
    209,979.60/314,969.40 = 125,998.80/x
  3. Step 3: Cross multiply
    209,979.60x = 314,969.40 × 125,998.80
  4. Step 4: Simplify right side
    209,979.60x = 39,685,766,436.72
  5. Step 5: Solve for x
    x = 39,685,766,436.72/209,979.60
  6. Step 6: Final answer
    x = 188,998.20

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1.5x scale

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.