Home / 103,811.09-143,249.90-58,496.45

Finding the Fourth Proportional to 103,811.09, 143,249.90 and 58,496.45

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Solution

The fourth proportional to 103,811.09, 143,249.90 and 58,496.45 is: 80,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,811.09 : 143,249.90 = 58,496.45 : x
  2. Step 2: Convert to fraction form
    103,811.09/143,249.90 = 58,496.45/x
  3. Step 3: Cross multiply
    103,811.09x = 143,249.90 × 58,496.45
  4. Step 4: Simplify right side
    103,811.09x = 8,379,609,604.12
  5. Step 5: Solve for x
    x = 8,379,609,604.12/103,811.09
  6. Step 6: Final answer
    x = 80,719.80

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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.