Home / 133,964.18-184,786.47-79,477.78

Finding the Fourth Proportional to 133,964.18, 184,786.47 and 79,477.78

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Solution

The fourth proportional to 133,964.18, 184,786.47 and 79,477.78 is: 109,629.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,964.18 : 184,786.47 = 79,477.78 : x
  2. Step 2: Convert to fraction form
    133,964.18/184,786.47 = 79,477.78/x
  3. Step 3: Cross multiply
    133,964.18x = 184,786.47 × 79,477.78
  4. Step 4: Simplify right side
    133,964.18x = 14,686,418,409.64
  5. Step 5: Solve for x
    x = 14,686,418,409.64/133,964.18
  6. Step 6: Final answer
    x = 109,629.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.