Home / 205,835.80-308,948.10-127,103.80

Finding the Fourth Proportional to 205,835.80, 308,948.10 and 127,103.80

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Solution

The fourth proportional to 205,835.80, 308,948.10 and 127,103.80 is: 190,775.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,835.80 : 308,948.10 = 127,103.80 : x
  2. Step 2: Convert to fraction form
    205,835.80/308,948.10 = 127,103.80/x
  3. Step 3: Cross multiply
    205,835.80x = 308,948.10 × 127,103.80
  4. Step 4: Simplify right side
    205,835.80x = 39,268,477,512.78
  5. Step 5: Solve for x
    x = 39,268,477,512.78/205,835.80
  6. Step 6: Final answer
    x = 190,775.74

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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.