Finding the Fourth Proportional to 129,042,910.80, 193,564,366.20 and 38,158,405.20
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Solution
The fourth proportional to 129,042,910.80, 193,564,366.20 and 38,158,405.20 is: 57,237,607.80
Step by Step Solution
- Step 1: Write the proportion equation
129,042,910.80 : 193,564,366.20 = 38,158,405.20 : x - Step 2: Convert to fraction form
129,042,910.80/193,564,366.20 = 38,158,405.20/x - Step 3: Cross multiply
129,042,910.80x = 193,564,366.20 × 38,158,405.20 - Step 4: Simplify right side
129,042,910.80x = 7,386,107,517,740,784 - Step 5: Solve for x
x = 7,386,107,517,740,784/129,042,910.80 - Step 6: Final answer
x = 57,237,607.80
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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.