Home / 131,355,109.72-181,239,978.26-78,421,515.31

Finding the Fourth Proportional to 131,355,109.72, 181,239,978.26 and 78,421,515.31

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Solution

The fourth proportional to 131,355,109.72, 181,239,978.26 and 78,421,515.31 is: 108,203,736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,355,109.72 : 181,239,978.26 = 78,421,515.31 : x
  2. Step 2: Convert to fraction form
    131,355,109.72/181,239,978.26 = 78,421,515.31/x
  3. Step 3: Cross multiply
    131,355,109.72x = 181,239,978.26 × 78,421,515.31
  4. Step 4: Simplify right side
    131,355,109.72x = 14,213,113,728,994,458
  5. Step 5: Solve for x
    x = 14,213,113,728,994,458/131,355,109.72
  6. Step 6: Final answer
    x = 108,203,736.87

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