Home / 103,919.55-143,408.91-56,172.89

Finding the Fourth Proportional to 103,919.55, 143,408.91 and 56,172.89

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Solution

The fourth proportional to 103,919.55, 143,408.91 and 56,172.89 is: 77,518.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,919.55 : 143,408.91 = 56,172.89 : x
  2. Step 2: Convert to fraction form
    103,919.55/143,408.91 = 56,172.89/x
  3. Step 3: Cross multiply
    103,919.55x = 143,408.91 × 56,172.89
  4. Step 4: Simplify right side
    103,919.55x = 8,055,693,284.97
  5. Step 5: Solve for x
    x = 8,055,693,284.97/103,919.55
  6. Step 6: Final answer
    x = 77,518.56

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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.