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Finding the Fourth Proportional to 137,146.72, 205,655.47 and 89,037.49

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Solution

The fourth proportional to 137,146.72, 205,655.47 and 89,037.49 is: 133,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,146.72 : 205,655.47 = 89,037.49 : x
  2. Step 2: Convert to fraction form
    137,146.72/205,655.47 = 89,037.49/x
  3. Step 3: Cross multiply
    137,146.72x = 205,655.47 × 89,037.49
  4. Step 4: Simplify right side
    137,146.72x = 18,311,046,408.38
  5. Step 5: Solve for x
    x = 18,311,046,408.38/137,146.72
  6. Step 6: Final answer
    x = 133,514.29

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