Home / 103,919.34-143,409.35-56,172.58

Finding the Fourth Proportional to 103,919.34, 143,409.35 and 56,172.58

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Solution

The fourth proportional to 103,919.34, 143,409.35 and 56,172.58 is: 77,518.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,919.34 : 143,409.35 = 56,172.58 : x
  2. Step 2: Convert to fraction form
    103,919.34/143,409.35 = 56,172.58/x
  3. Step 3: Cross multiply
    103,919.34x = 143,409.35 × 56,172.58
  4. Step 4: Simplify right side
    103,919.34x = 8,055,673,185.62
  5. Step 5: Solve for x
    x = 8,055,673,185.62/103,919.34
  6. Step 6: Final answer
    x = 77,518.52

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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.