Finding the Fourth Proportional to 128,862,613.26, 177,830,435.25 and 70,915,861.26
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Solution
The fourth proportional to 128,862,613.26, 177,830,435.25 and 70,915,861.26 is: 97,863,904.47
Step by Step Solution
- Step 1: Write the proportion equation
128,862,613.26 : 177,830,435.25 = 70,915,861.26 : x - Step 2: Convert to fraction form
128,862,613.26/177,830,435.25 = 70,915,861.26/x - Step 3: Cross multiply
128,862,613.26x = 177,830,435.25 × 70,915,861.26 - Step 4: Simplify right side
128,862,613.26x = 12,610,998,473,994,414 - Step 5: Solve for x
x = 12,610,998,473,994,414/128,862,613.26 - Step 6: Final answer
x = 97,863,904.47
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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.