Home / 137,013.95-189,079.19-80,425.32

Finding the Fourth Proportional to 137,013.95, 189,079.19 and 80,425.32

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Solution

The fourth proportional to 137,013.95, 189,079.19 and 80,425.32 is: 110,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,013.95 : 189,079.19 = 80,425.32 : x
  2. Step 2: Convert to fraction form
    137,013.95/189,079.19 = 80,425.32/x
  3. Step 3: Cross multiply
    137,013.95x = 189,079.19 × 80,425.32
  4. Step 4: Simplify right side
    137,013.95x = 15,206,753,958.96
  5. Step 5: Solve for x
    x = 15,206,753,958.96/137,013.95
  6. Step 6: Final answer
    x = 110,986.91

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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.