Home / 135,226.72-186,650.49-78,649.03

Finding the Fourth Proportional to 135,226.72, 186,650.49 and 78,649.03

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Solution

The fourth proportional to 135,226.72, 186,650.49 and 78,649.03 is: 108,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,226.72 : 186,650.49 = 78,649.03 : x
  2. Step 2: Convert to fraction form
    135,226.72/186,650.49 = 78,649.03/x
  3. Step 3: Cross multiply
    135,226.72x = 186,650.49 × 78,649.03
  4. Step 4: Simplify right side
    135,226.72x = 14,679,879,987.52
  5. Step 5: Solve for x
    x = 14,679,879,987.52/135,226.72
  6. Step 6: Final answer
    x = 108,557.54

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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.