Home / 139,540.31-209,312.84-39,703.14

Finding the Fourth Proportional to 139,540.31, 209,312.84 and 39,703.14

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Solution

The fourth proportional to 139,540.31, 209,312.84 and 39,703.14 is: 59,555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,540.31 : 209,312.84 = 39,703.14 : x
  2. Step 2: Convert to fraction form
    139,540.31/209,312.84 = 39,703.14/x
  3. Step 3: Cross multiply
    139,540.31x = 209,312.84 × 39,703.14
  4. Step 4: Simplify right side
    139,540.31x = 8,310,376,791.80
  5. Step 5: Solve for x
    x = 8,310,376,791.80/139,540.31
  6. Step 6: Final answer
    x = 59,555.39

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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.