Finding the Fourth Proportional to 128,932,243.20, 193,398,364.80 and 88,117,574.40
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Solution
The fourth proportional to 128,932,243.20, 193,398,364.80 and 88,117,574.40 is: 132,176,361.60
Step by Step Solution
- Step 1: Write the proportion equation
128,932,243.20 : 193,398,364.80 = 88,117,574.40 : x - Step 2: Convert to fraction form
128,932,243.20/193,398,364.80 = 88,117,574.40/x - Step 3: Cross multiply
128,932,243.20x = 193,398,364.80 × 88,117,574.40 - Step 4: Simplify right side
128,932,243.20x = 17,041,794,799,102,344 - Step 5: Solve for x
x = 17,041,794,799,102,344/128,932,243.20 - Step 6: Final answer
x = 132,176,361.60
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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.