Home / 137,115.56-189,220.92-80,527.88

Finding the Fourth Proportional to 137,115.56, 189,220.92 and 80,527.88

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Solution

The fourth proportional to 137,115.56, 189,220.92 and 80,527.88 is: 111,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,115.56 : 189,220.92 = 80,527.88 : x
  2. Step 2: Convert to fraction form
    137,115.56/189,220.92 = 80,527.88/x
  3. Step 3: Cross multiply
    137,115.56x = 189,220.92 × 80,527.88
  4. Step 4: Simplify right side
    137,115.56x = 15,237,559,539.25
  5. Step 5: Solve for x
    x = 15,237,559,539.25/137,115.56
  6. Step 6: Final answer
    x = 111,129.32

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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.