Home / 139,743.88-209,648.31-39,905.44

Finding the Fourth Proportional to 139,743.88, 209,648.31 and 39,905.44

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Solution

The fourth proportional to 139,743.88, 209,648.31 and 39,905.44 is: 59,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743.88 : 209,648.31 = 39,905.44 : x
  2. Step 2: Convert to fraction form
    139,743.88/209,648.31 = 39,905.44/x
  3. Step 3: Cross multiply
    139,743.88x = 209,648.31 × 39,905.44
  4. Step 4: Simplify right side
    139,743.88x = 8,366,108,055.81
  5. Step 5: Solve for x
    x = 8,366,108,055.81/139,743.88
  6. Step 6: Final answer
    x = 59,867.44

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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.