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Finding the Fourth Proportional to 153,315.90, 211,575.63 and 86,247.90

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Solution

The fourth proportional to 153,315.90, 211,575.63 and 86,247.90 is: 119,021.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,315.90 : 211,575.63 = 86,247.90 : x
  2. Step 2: Convert to fraction form
    153,315.90/211,575.63 = 86,247.90/x
  3. Step 3: Cross multiply
    153,315.90x = 211,575.63 × 86,247.90
  4. Step 4: Simplify right side
    153,315.90x = 18,247,953,778.68
  5. Step 5: Solve for x
    x = 18,247,953,778.68/153,315.90
  6. Step 6: Final answer
    x = 119,021.93

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