Home / 190,400.33-262,781.37-121,519.50

Finding the Fourth Proportional to 190,400.33, 262,781.37 and 121,519.50

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Solution

The fourth proportional to 190,400.33, 262,781.37 and 121,519.50 is: 167,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,400.33 : 262,781.37 = 121,519.50 : x
  2. Step 2: Convert to fraction form
    190,400.33/262,781.37 = 121,519.50/x
  3. Step 3: Cross multiply
    190,400.33x = 262,781.37 × 121,519.50
  4. Step 4: Simplify right side
    190,400.33x = 31,933,060,691.72
  5. Step 5: Solve for x
    x = 31,933,060,691.72/190,400.33
  6. Step 6: Final answer
    x = 167,715.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.