Home / 143,571.87-198,303.30-105,276.15

Finding the Fourth Proportional to 143,571.87, 198,303.30 and 105,276.15

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Solution

The fourth proportional to 143,571.87, 198,303.30 and 105,276.15 is: 145,408.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,571.87 : 198,303.30 = 105,276.15 : x
  2. Step 2: Convert to fraction form
    143,571.87/198,303.30 = 105,276.15/x
  3. Step 3: Cross multiply
    143,571.87x = 198,303.30 × 105,276.15
  4. Step 4: Simplify right side
    143,571.87x = 20,876,607,956.30
  5. Step 5: Solve for x
    x = 20,876,607,956.30/143,571.87
  6. Step 6: Final answer
    x = 145,408.76

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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.