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Finding the Fourth Proportional to 188,450.70, 282,676.05 and 137,712.30

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Solution

The fourth proportional to 188,450.70, 282,676.05 and 137,712.30 is: 206,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,450.70 : 282,676.05 = 137,712.30 : x
  2. Step 2: Convert to fraction form
    188,450.70/282,676.05 = 137,712.30/x
  3. Step 3: Cross multiply
    188,450.70x = 282,676.05 × 137,712.30
  4. Step 4: Simplify right side
    188,450.70x = 38,927,969,000.42
  5. Step 5: Solve for x
    x = 38,927,969,000.42/188,450.70
  6. Step 6: Final answer
    x = 206,568.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.