Home / 208,008,512.80-312,012,769.20-105,971,840.80

Finding the Fourth Proportional to 208,008,512.80, 312,012,769.20 and 105,971,840.80

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Solution

The fourth proportional to 208,008,512.80, 312,012,769.20 and 105,971,840.80 is: 158,957,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,008,512.80 : 312,012,769.20 = 105,971,840.80 : x
  2. Step 2: Convert to fraction form
    208,008,512.80/312,012,769.20 = 105,971,840.80/x
  3. Step 3: Cross multiply
    208,008,512.80x = 312,012,769.20 × 105,971,840.80
  4. Step 4: Simplify right side
    208,008,512.80x = 33,064,567,505,229,540
  5. Step 5: Solve for x
    x = 33,064,567,505,229,540/208,008,512.80
  6. Step 6: Final answer
    x = 158,957,761.20

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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.