Home / 190,943.16-286,525.74-78,634.68

Finding the Fourth Proportional to 190,943.16, 286,525.74 and 78,634.68

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Solution

The fourth proportional to 190,943.16, 286,525.74 and 78,634.68 is: 117,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,943.16 : 286,525.74 = 78,634.68 : x
  2. Step 2: Convert to fraction form
    190,943.16/286,525.74 = 78,634.68/x
  3. Step 3: Cross multiply
    190,943.16x = 286,525.74 × 78,634.68
  4. Step 4: Simplify right side
    190,943.16x = 22,530,859,876.66
  5. Step 5: Solve for x
    x = 22,530,859,876.66/190,943.16
  6. Step 6: Final answer
    x = 117,997.73

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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.