Home / 137,122.56-189,230.58-80,534.88

Finding the Fourth Proportional to 137,122.56, 189,230.58 and 80,534.88

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Solution

The fourth proportional to 137,122.56, 189,230.58 and 80,534.88 is: 111,138.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,122.56 : 189,230.58 = 80,534.88 : x
  2. Step 2: Convert to fraction form
    137,122.56/189,230.58 = 80,534.88/x
  3. Step 3: Cross multiply
    137,122.56x = 189,230.58 × 80,534.88
  4. Step 4: Simplify right side
    137,122.56x = 15,239,662,052.63
  5. Step 5: Solve for x
    x = 15,239,662,052.63/137,122.56
  6. Step 6: Final answer
    x = 111,138.98

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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.