Home / 206,016,629.40-309,024,944.10-69,702,012.90

Finding the Fourth Proportional to 206,016,629.40, 309,024,944.10 and 69,702,012.90

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Solution

The fourth proportional to 206,016,629.40, 309,024,944.10 and 69,702,012.90 is: 104,553,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,016,629.40 : 309,024,944.10 = 69,702,012.90 : x
  2. Step 2: Convert to fraction form
    206,016,629.40/309,024,944.10 = 69,702,012.90/x
  3. Step 3: Cross multiply
    206,016,629.40x = 309,024,944.10 × 69,702,012.90
  4. Step 4: Simplify right side
    206,016,629.40x = 21,539,660,640,079,984
  5. Step 5: Solve for x
    x = 21,539,660,640,079,984/206,016,629.40
  6. Step 6: Final answer
    x = 104,553,019.35

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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.