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Finding the Fourth Proportional to 140.08, 210.05 and 58.90

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Solution

The fourth proportional to 140.08, 210.05 and 58.90 is: 88.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.08 : 210.05 = 58.90 : x
  2. Step 2: Convert to fraction form
    140.08/210.05 = 58.90/x
  3. Step 3: Cross multiply
    140.08x = 210.05 × 58.90
  4. Step 4: Simplify right side
    140.08x = 12,371.13
  5. Step 5: Solve for x
    x = 12,371.13/140.08
  6. Step 6: Final answer
    x = 88.32

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