Home / 143,489,242.23-198,021,643.75-80,786,885.30

Finding the Fourth Proportional to 143,489,242.23, 198,021,643.75 and 80,786,885.30

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Solution

The fourth proportional to 143,489,242.23, 198,021,643.75 and 80,786,885.30 is: 111,489,555.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,489,242.23 : 198,021,643.75 = 80,786,885.30 : x
  2. Step 2: Convert to fraction form
    143,489,242.23/198,021,643.75 = 80,786,885.30/x
  3. Step 3: Cross multiply
    143,489,242.23x = 198,021,643.75 × 80,786,885.30
  4. Step 4: Simplify right side
    143,489,242.23x = 15,997,551,821,516,038
  5. Step 5: Solve for x
    x = 15,997,551,821,516,038/143,489,242.23
  6. Step 6: Final answer
    x = 111,489,555.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.