Home / 139,968,138.70-209,952,208.05-136,189,002.70

Finding the Fourth Proportional to 139,968,138.70, 209,952,208.05 and 136,189,002.70

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Solution

The fourth proportional to 139,968,138.70, 209,952,208.05 and 136,189,002.70 is: 204,283,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,138.70 : 209,952,208.05 = 136,189,002.70 : x
  2. Step 2: Convert to fraction form
    139,968,138.70/209,952,208.05 = 136,189,002.70/x
  3. Step 3: Cross multiply
    139,968,138.70x = 209,952,208.05 × 136,189,002.70
  4. Step 4: Simplify right side
    139,968,138.70x = 28,593,181,828,992,412
  5. Step 5: Solve for x
    x = 28,593,181,828,992,412/139,968,138.70
  6. Step 6: Final answer
    x = 204,283,504.05

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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.