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Finding the Fourth Proportional to 190,649.40, 285,788.21 and 90,782.79

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Solution

The fourth proportional to 190,649.40, 285,788.21 and 90,782.79 is: 136,085.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,649.40 : 285,788.21 = 90,782.79 : x
  2. Step 2: Convert to fraction form
    190,649.40/285,788.21 = 90,782.79/x
  3. Step 3: Cross multiply
    190,649.40x = 285,788.21 × 90,782.79
  4. Step 4: Simplify right side
    190,649.40x = 25,944,650,598.99
  5. Step 5: Solve for x
    x = 25,944,650,598.99/190,649.40
  6. Step 6: Final answer
    x = 136,085.67

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