Finding the Fourth Proportional to 128,431,412, 177,235,348.56 and 76,923,188
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Solution
The fourth proportional to 128,431,412, 177,235,348.56 and 76,923,188 is: 106,153,999.44
Step by Step Solution
- Step 1: Write the proportion equation
128,431,412 : 177,235,348.56 = 76,923,188 : x - Step 2: Convert to fraction form
128,431,412/177,235,348.56 = 76,923,188/x - Step 3: Cross multiply
128,431,412x = 177,235,348.56 × 76,923,188 - Step 4: Simplify right side
128,431,412x = 13,633,508,037,526,410 - Step 5: Solve for x
x = 13,633,508,037,526,410/128,431,412 - Step 6: Final answer
x = 106,153,999.44
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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.