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Finding the Fourth Proportional to 137,381.40, 206,120.70 and 132,521.40

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Solution

The fourth proportional to 137,381.40, 206,120.70 and 132,521.40 is: 198,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,381.40 : 206,120.70 = 132,521.40 : x
  2. Step 2: Convert to fraction form
    137,381.40/206,120.70 = 132,521.40/x
  3. Step 3: Cross multiply
    137,381.40x = 206,120.70 × 132,521.40
  4. Step 4: Simplify right side
    137,381.40x = 27,315,403,732.98
  5. Step 5: Solve for x
    x = 27,315,403,732.98/137,381.40
  6. Step 6: Final answer
    x = 198,828.98

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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.