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Finding the Fourth Proportional to 140,503.70, 210,904.09 and 137,330.73

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Solution

The fourth proportional to 140,503.70, 210,904.09 and 137,330.73 is: 206,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,503.70 : 210,904.09 = 137,330.73 : x
  2. Step 2: Convert to fraction form
    140,503.70/210,904.09 = 137,330.73/x
  3. Step 3: Cross multiply
    140,503.70x = 210,904.09 × 137,330.73
  4. Step 4: Simplify right side
    140,503.70x = 28,963,612,296.36
  5. Step 5: Solve for x
    x = 28,963,612,296.36/140,503.70
  6. Step 6: Final answer
    x = 206,141.27

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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.