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Finding the Fourth Proportional to 208,078.46, 287,071.46 and 136,555.67

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Solution

The fourth proportional to 208,078.46, 287,071.46 and 136,555.67 is: 188,396.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,078.46 : 287,071.46 = 136,555.67 : x
  2. Step 2: Convert to fraction form
    208,078.46/287,071.46 = 136,555.67/x
  3. Step 3: Cross multiply
    208,078.46x = 287,071.46 × 136,555.67
  4. Step 4: Simplify right side
    208,078.46x = 39,201,234,875.40
  5. Step 5: Solve for x
    x = 39,201,234,875.40/208,078.46
  6. Step 6: Final answer
    x = 188,396.41

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