Home / 137,169.38-189,286.08-76,728.35

Finding the Fourth Proportional to 137,169.38, 189,286.08 and 76,728.35

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Solution

The fourth proportional to 137,169.38, 189,286.08 and 76,728.35 is: 105,880.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,169.38 : 189,286.08 = 76,728.35 : x
  2. Step 2: Convert to fraction form
    137,169.38/189,286.08 = 76,728.35/x
  3. Step 3: Cross multiply
    137,169.38x = 189,286.08 × 76,728.35
  4. Step 4: Simplify right side
    137,169.38x = 14,523,608,596.37
  5. Step 5: Solve for x
    x = 14,523,608,596.37/137,169.38
  6. Step 6: Final answer
    x = 105,880.84

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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.