Home / 137,391.06-189,601.64-80,028.91

Finding the Fourth Proportional to 137,391.06, 189,601.64 and 80,028.91

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Solution

The fourth proportional to 137,391.06, 189,601.64 and 80,028.91 is: 110,441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,391.06 : 189,601.64 = 80,028.91 : x
  2. Step 2: Convert to fraction form
    137,391.06/189,601.64 = 80,028.91/x
  3. Step 3: Cross multiply
    137,391.06x = 189,601.64 × 80,028.91
  4. Step 4: Simplify right side
    137,391.06x = 15,173,612,495.30
  5. Step 5: Solve for x
    x = 15,173,612,495.30/137,391.06
  6. Step 6: Final answer
    x = 110,441.05

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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.