Home / 103,812.85-143,183.32-89,497.45

Finding the Fourth Proportional to 103,812.85, 143,183.32 and 89,497.45

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Solution

The fourth proportional to 103,812.85, 143,183.32 and 89,497.45 is: 123,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,812.85 : 143,183.32 = 89,497.45 : x
  2. Step 2: Convert to fraction form
    103,812.85/143,183.32 = 89,497.45/x
  3. Step 3: Cross multiply
    103,812.85x = 143,183.32 × 89,497.45
  4. Step 4: Simplify right side
    103,812.85x = 12,814,542,022.53
  5. Step 5: Solve for x
    x = 12,814,542,022.53/103,812.85
  6. Step 6: Final answer
    x = 123,438.88

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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.