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Finding the Fourth Proportional to 137,898.40, 206,896.20 and 133,038.40

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Solution

The fourth proportional to 137,898.40, 206,896.20 and 133,038.40 is: 199,604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,898.40 : 206,896.20 = 133,038.40 : x
  2. Step 2: Convert to fraction form
    137,898.40/206,896.20 = 133,038.40/x
  3. Step 3: Cross multiply
    137,898.40x = 206,896.20 × 133,038.40
  4. Step 4: Simplify right side
    137,898.40x = 27,525,139,414.08
  5. Step 5: Solve for x
    x = 27,525,139,414.08/137,898.40
  6. Step 6: Final answer
    x = 199,604.49

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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.