Home / 139,918.05-209,815.16-40,055.49

Finding the Fourth Proportional to 139,918.05, 209,815.16 and 40,055.49

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Solution

The fourth proportional to 139,918.05, 209,815.16 and 40,055.49 is: 60,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,918.05 : 209,815.16 = 40,055.49 : x
  2. Step 2: Convert to fraction form
    139,918.05/209,815.16 = 40,055.49/x
  3. Step 3: Cross multiply
    139,918.05x = 209,815.16 × 40,055.49
  4. Step 4: Simplify right side
    139,918.05x = 8,404,248,842.95
  5. Step 5: Solve for x
    x = 8,404,248,842.95/139,918.05
  6. Step 6: Final answer
    x = 60,065.51

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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.