Finding the Fourth Proportional to 128,270,040.62, 177,012,892.35 and 69,532,524.09
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Solution
The fourth proportional to 128,270,040.62, 177,012,892.35 and 69,532,524.09 is: 95,955,011.34
Step by Step Solution
- Step 1: Write the proportion equation
128,270,040.62 : 177,012,892.35 = 69,532,524.09 : x - Step 2: Convert to fraction form
128,270,040.62/177,012,892.35 = 69,532,524.09/x - Step 3: Cross multiply
128,270,040.62x = 177,012,892.35 × 69,532,524.09 - Step 4: Simplify right side
128,270,040.62x = 12,308,153,201,566,952 - Step 5: Solve for x
x = 12,308,153,201,566,952/128,270,040.62 - Step 6: Final answer
x = 95,955,011.34
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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.