Home / 103,919.74-143,409.21-56,173.06

Finding the Fourth Proportional to 103,919.74, 143,409.21 and 56,173.06

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Solution

The fourth proportional to 103,919.74, 143,409.21 and 56,173.06 is: 77,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,919.74 : 143,409.21 = 56,173.06 : x
  2. Step 2: Convert to fraction form
    103,919.74/143,409.21 = 56,173.06/x
  3. Step 3: Cross multiply
    103,919.74x = 143,409.21 × 56,173.06
  4. Step 4: Simplify right side
    103,919.74x = 8,055,734,157.88
  5. Step 5: Solve for x
    x = 8,055,734,157.88/103,919.74
  6. Step 6: Final answer
    x = 77,518.81

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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.