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Finding the Fourth Proportional to 139,690.48, 209,568.25 and 39,852.04

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Solution

The fourth proportional to 139,690.48, 209,568.25 and 39,852.04 is: 59,787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,690.48 : 209,568.25 = 39,852.04 : x
  2. Step 2: Convert to fraction form
    139,690.48/209,568.25 = 39,852.04/x
  3. Step 3: Cross multiply
    139,690.48x = 209,568.25 × 39,852.04
  4. Step 4: Simplify right side
    139,690.48x = 8,351,721,233.89
  5. Step 5: Solve for x
    x = 8,351,721,233.89/139,690.48
  6. Step 6: Final answer
    x = 59,787.34

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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.