Home / 143,777.06-198,409.68-78,366.44

Finding the Fourth Proportional to 143,777.06, 198,409.68 and 78,366.44

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Solution

The fourth proportional to 143,777.06, 198,409.68 and 78,366.44 is: 108,144.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,777.06 : 198,409.68 = 78,366.44 : x
  2. Step 2: Convert to fraction form
    143,777.06/198,409.68 = 78,366.44/x
  3. Step 3: Cross multiply
    143,777.06x = 198,409.68 × 78,366.44
  4. Step 4: Simplify right side
    143,777.06x = 15,548,660,779.16
  5. Step 5: Solve for x
    x = 15,548,660,779.16/143,777.06
  6. Step 6: Final answer
    x = 108,144.24

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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.