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Finding the Fourth Proportional to 138,307.42, 190,861.68 and 77,877.82

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Solution

The fourth proportional to 138,307.42, 190,861.68 and 77,877.82 is: 107,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,307.42 : 190,861.68 = 77,877.82 : x
  2. Step 2: Convert to fraction form
    138,307.42/190,861.68 = 77,877.82/x
  3. Step 3: Cross multiply
    138,307.42x = 190,861.68 × 77,877.82
  4. Step 4: Simplify right side
    138,307.42x = 14,863,891,559.94
  5. Step 5: Solve for x
    x = 14,863,891,559.94/138,307.42
  6. Step 6: Final answer
    x = 107,469.95

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