Home / 135,464.88-186,923.82-78,106.36

Finding the Fourth Proportional to 135,464.88, 186,923.82 and 78,106.36

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Solution

The fourth proportional to 135,464.88, 186,923.82 and 78,106.36 is: 107,776.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,464.88 : 186,923.82 = 78,106.36 : x
  2. Step 2: Convert to fraction form
    135,464.88/186,923.82 = 78,106.36/x
  3. Step 3: Cross multiply
    135,464.88x = 186,923.82 × 78,106.36
  4. Step 4: Simplify right side
    135,464.88x = 14,599,939,177.50
  5. Step 5: Solve for x
    x = 14,599,939,177.50/135,464.88
  6. Step 6: Final answer
    x = 107,776.56

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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.