Finding the Fourth Proportional to 128,683,159.19, 177,582,974.29 and 69,945,675.47
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Solution
The fourth proportional to 128,683,159.19, 177,582,974.29 and 69,945,675.47 is: 96,525,148.79
Step by Step Solution
- Step 1: Write the proportion equation
128,683,159.19 : 177,582,974.29 = 69,945,675.47 : x - Step 2: Convert to fraction form
128,683,159.19/177,582,974.29 = 69,945,675.47/x - Step 3: Cross multiply
128,683,159.19x = 177,582,974.29 × 69,945,675.47 - Step 4: Simplify right side
128,683,159.19x = 12,421,161,087,622,914 - Step 5: Solve for x
x = 12,421,161,087,622,914/128,683,159.19 - Step 6: Final answer
x = 96,525,148.79
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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.