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Finding the Fourth Proportional to 99,800.35, 137,747.61 and 65,814.98

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Solution

The fourth proportional to 99,800.35, 137,747.61 and 65,814.98 is: 90,839.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,800.35 : 137,747.61 = 65,814.98 : x
  2. Step 2: Convert to fraction form
    99,800.35/137,747.61 = 65,814.98/x
  3. Step 3: Cross multiply
    99,800.35x = 137,747.61 × 65,814.98
  4. Step 4: Simplify right side
    99,800.35x = 9,065,855,508.46
  5. Step 5: Solve for x
    x = 9,065,855,508.46/99,800.35
  6. Step 6: Final answer
    x = 90,839.92

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