Home / 189,999.86-285,220.67-111,170.66

Finding the Fourth Proportional to 189,999.86, 285,220.67 and 111,170.66

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Solution

The fourth proportional to 189,999.86, 285,220.67 and 111,170.66 is: 166,885.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,999.86 : 285,220.67 = 111,170.66 : x
  2. Step 2: Convert to fraction form
    189,999.86/285,220.67 = 111,170.66/x
  3. Step 3: Cross multiply
    189,999.86x = 285,220.67 × 111,170.66
  4. Step 4: Simplify right side
    189,999.86x = 31,708,170,129.54
  5. Step 5: Solve for x
    x = 31,708,170,129.54/189,999.86
  6. Step 6: Final answer
    x = 166,885.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.