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Finding the Fourth Proportional to 139,929.27, 209,855.41 and 38,703.07

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Solution

The fourth proportional to 139,929.27, 209,855.41 and 38,703.07 is: 58,043.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,929.27 : 209,855.41 = 38,703.07 : x
  2. Step 2: Convert to fraction form
    139,929.27/209,855.41 = 38,703.07/x
  3. Step 3: Cross multiply
    139,929.27x = 209,855.41 × 38,703.07
  4. Step 4: Simplify right side
    139,929.27x = 8,122,047,608.23
  5. Step 5: Solve for x
    x = 8,122,047,608.23/139,929.27
  6. Step 6: Final answer
    x = 58,043.95

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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.