Finding the Fourth Proportional to 128,304,072.40, 192,456,108.60 and 60,153,653.20
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Solution
The fourth proportional to 128,304,072.40, 192,456,108.60 and 60,153,653.20 is: 90,230,479.80
Step by Step Solution
- Step 1: Write the proportion equation
128,304,072.40 : 192,456,108.60 = 60,153,653.20 : x - Step 2: Convert to fraction form
128,304,072.40/192,456,108.60 = 60,153,653.20/x - Step 3: Cross multiply
128,304,072.40x = 192,456,108.60 × 60,153,653.20 - Step 4: Simplify right side
128,304,072.40x = 11,576,938,012,945,938 - Step 5: Solve for x
x = 11,576,938,012,945,938/128,304,072.40 - Step 6: Final answer
x = 90,230,479.80
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1.5x scale
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.