Home / 139,982.13-209,930.13-40,115.55

Finding the Fourth Proportional to 139,982.13, 209,930.13 and 40,115.55

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Solution

The fourth proportional to 139,982.13, 209,930.13 and 40,115.55 is: 60,160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,982.13 : 209,930.13 = 40,115.55 : x
  2. Step 2: Convert to fraction form
    139,982.13/209,930.13 = 40,115.55/x
  3. Step 3: Cross multiply
    139,982.13x = 209,930.13 × 40,115.55
  4. Step 4: Simplify right side
    139,982.13x = 8,421,462,626.52
  5. Step 5: Solve for x
    x = 8,421,462,626.52/139,982.13
  6. Step 6: Final answer
    x = 60,160.98

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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.