Home / 143,638,609.75-198,222,540.33-81,762,926.83

Finding the Fourth Proportional to 143,638,609.75, 198,222,540.33 and 81,762,926.83

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Solution

The fourth proportional to 143,638,609.75, 198,222,540.33 and 81,762,926.83 is: 112,833,555.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,638,609.75 : 198,222,540.33 = 81,762,926.83 : x
  2. Step 2: Convert to fraction form
    143,638,609.75/198,222,540.33 = 81,762,926.83/x
  3. Step 3: Cross multiply
    143,638,609.75x = 198,222,540.33 × 81,762,926.83
  4. Step 4: Simplify right side
    143,638,609.75x = 16,207,255,061,058,514
  5. Step 5: Solve for x
    x = 16,207,255,061,058,514/143,638,609.75
  6. Step 6: Final answer
    x = 112,833,555.61

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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.