Home / 103,845.42-143,303.22-65,625.36

Finding the Fourth Proportional to 103,845.42, 143,303.22 and 65,625.36

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Solution

The fourth proportional to 103,845.42, 143,303.22 and 65,625.36 is: 90,560.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,845.42 : 143,303.22 = 65,625.36 : x
  2. Step 2: Convert to fraction form
    103,845.42/143,303.22 = 65,625.36/x
  3. Step 3: Cross multiply
    103,845.42x = 143,303.22 × 65,625.36
  4. Step 4: Simplify right side
    103,845.42x = 9,404,325,401.66
  5. Step 5: Solve for x
    x = 9,404,325,401.66/103,845.42
  6. Step 6: Final answer
    x = 90,560.81

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1.5x scale

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.