Home / 201,203,999.10-301,805,998.65-139,981,995.90

Finding the Fourth Proportional to 201,203,999.10, 301,805,998.65 and 139,981,995.90

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Solution

The fourth proportional to 201,203,999.10, 301,805,998.65 and 139,981,995.90 is: 209,972,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,203,999.10 : 301,805,998.65 = 139,981,995.90 : x
  2. Step 2: Convert to fraction form
    201,203,999.10/301,805,998.65 = 139,981,995.90/x
  3. Step 3: Cross multiply
    201,203,999.10x = 301,805,998.65 × 139,981,995.90
  4. Step 4: Simplify right side
    201,203,999.10x = 42,247,406,065,619,704
  5. Step 5: Solve for x
    x = 42,247,406,065,619,704/201,203,999.10
  6. Step 6: Final answer
    x = 209,972,993.85

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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.