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Finding the Fourth Proportional to 100,978.40, 151,300.92 and 61,415.84

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Solution

The fourth proportional to 100,978.40, 151,300.92 and 61,415.84 is: 92,022.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,978.40 : 151,300.92 = 61,415.84 : x
  2. Step 2: Convert to fraction form
    100,978.40/151,300.92 = 61,415.84/x
  3. Step 3: Cross multiply
    100,978.40x = 151,300.92 × 61,415.84
  4. Step 4: Simplify right side
    100,978.40x = 9,292,273,094.57
  5. Step 5: Solve for x
    x = 9,292,273,094.57/100,978.40
  6. Step 6: Final answer
    x = 92,022.38

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