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Finding the Fourth Proportional to 98,576.20, 147,864.30 and 90,411.40

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Solution

The fourth proportional to 98,576.20, 147,864.30 and 90,411.40 is: 135,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,576.20 : 147,864.30 = 90,411.40 : x
  2. Step 2: Convert to fraction form
    98,576.20/147,864.30 = 90,411.40/x
  3. Step 3: Cross multiply
    98,576.20x = 147,864.30 × 90,411.40
  4. Step 4: Simplify right side
    98,576.20x = 13,368,618,373.02
  5. Step 5: Solve for x
    x = 13,368,618,373.02/98,576.20
  6. Step 6: Final answer
    x = 135,617.10

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