Home / 205,260.80-307,891.20-126,118.40

Finding the Fourth Proportional to 205,260.80, 307,891.20 and 126,118.40

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Solution

The fourth proportional to 205,260.80, 307,891.20 and 126,118.40 is: 189,177.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,260.80 : 307,891.20 = 126,118.40 : x
  2. Step 2: Convert to fraction form
    205,260.80/307,891.20 = 126,118.40/x
  3. Step 3: Cross multiply
    205,260.80x = 307,891.20 × 126,118.40
  4. Step 4: Simplify right side
    205,260.80x = 38,830,745,518.08
  5. Step 5: Solve for x
    x = 38,830,745,518.08/205,260.80
  6. Step 6: Final answer
    x = 189,177.60

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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.