Home / 239,181.54-330,072.21-137,211.45

Finding the Fourth Proportional to 239,181.54, 330,072.21 and 137,211.45

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Solution

The fourth proportional to 239,181.54, 330,072.21 and 137,211.45 is: 189,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,181.54 : 330,072.21 = 137,211.45 : x
  2. Step 2: Convert to fraction form
    239,181.54/330,072.21 = 137,211.45/x
  3. Step 3: Cross multiply
    239,181.54x = 330,072.21 × 137,211.45
  4. Step 4: Simplify right side
    239,181.54x = 45,289,686,538.80
  5. Step 5: Solve for x
    x = 45,289,686,538.80/239,181.54
  6. Step 6: Final answer
    x = 189,352.77

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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.