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Finding the Fourth Proportional to 145,401.76, 200,649.16 and 81,745.48

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Solution

The fourth proportional to 145,401.76, 200,649.16 and 81,745.48 is: 112,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401.76 : 200,649.16 = 81,745.48 : x
  2. Step 2: Convert to fraction form
    145,401.76/200,649.16 = 81,745.48/x
  3. Step 3: Cross multiply
    145,401.76x = 200,649.16 × 81,745.48
  4. Step 4: Simplify right side
    145,401.76x = 16,402,161,895.80
  5. Step 5: Solve for x
    x = 16,402,161,895.80/145,401.76
  6. Step 6: Final answer
    x = 112,805.80

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