Home / 103,105,342.12-142,284,293.88-76,761,487.48

Finding the Fourth Proportional to 103,105,342.12, 142,284,293.88 and 76,761,487.48

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Solution

The fourth proportional to 103,105,342.12, 142,284,293.88 and 76,761,487.48 is: 105,930,049.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,105,342.12 : 142,284,293.88 = 76,761,487.48 : x
  2. Step 2: Convert to fraction form
    103,105,342.12/142,284,293.88 = 76,761,487.48/x
  3. Step 3: Cross multiply
    103,105,342.12x = 142,284,293.88 × 76,761,487.48
  4. Step 4: Simplify right side
    103,105,342.12x = 10,921,954,043,270,260
  5. Step 5: Solve for x
    x = 10,921,954,043,270,260/103,105,342.12
  6. Step 6: Final answer
    x = 105,930,049.97

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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.