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Finding the Fourth Proportional to 155,879.61, 215,113.82 and 84,259.59

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Solution

The fourth proportional to 155,879.61, 215,113.82 and 84,259.59 is: 116,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,879.61 : 215,113.82 = 84,259.59 : x
  2. Step 2: Convert to fraction form
    155,879.61/215,113.82 = 84,259.59/x
  3. Step 3: Cross multiply
    155,879.61x = 215,113.82 × 84,259.59
  4. Step 4: Simplify right side
    155,879.61x = 18,125,401,855.24
  5. Step 5: Solve for x
    x = 18,125,401,855.24/155,879.61
  6. Step 6: Final answer
    x = 116,278.21

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