Home / 205,131.20-307,696.80-135,089.60

Finding the Fourth Proportional to 205,131.20, 307,696.80 and 135,089.60

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Solution

The fourth proportional to 205,131.20, 307,696.80 and 135,089.60 is: 202,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,131.20 : 307,696.80 = 135,089.60 : x
  2. Step 2: Convert to fraction form
    205,131.20/307,696.80 = 135,089.60/x
  3. Step 3: Cross multiply
    205,131.20x = 307,696.80 × 135,089.60
  4. Step 4: Simplify right side
    205,131.20x = 41,566,637,633.28
  5. Step 5: Solve for x
    x = 41,566,637,633.28/205,131.20
  6. Step 6: Final answer
    x = 202,634.40

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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.