Home / 205,273.60-307,910.40-121,292.80

Finding the Fourth Proportional to 205,273.60, 307,910.40 and 121,292.80

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Solution

The fourth proportional to 205,273.60, 307,910.40 and 121,292.80 is: 181,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,273.60 : 307,910.40 = 121,292.80 : x
  2. Step 2: Convert to fraction form
    205,273.60/307,910.40 = 121,292.80/x
  3. Step 3: Cross multiply
    205,273.60x = 307,910.40 × 121,292.80
  4. Step 4: Simplify right side
    205,273.60x = 37,347,314,565.12
  5. Step 5: Solve for x
    x = 37,347,314,565.12/205,273.60
  6. Step 6: Final answer
    x = 181,939.20

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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.