Finding the Fourth Proportional to 129,083,668.50, 178,135,466.19 and 71,136,916.50
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Solution
The fourth proportional to 129,083,668.50, 178,135,466.19 and 71,136,916.50 is: 98,168,946.79
Step by Step Solution
- Step 1: Write the proportion equation
129,083,668.50 : 178,135,466.19 = 71,136,916.50 : x - Step 2: Convert to fraction form
129,083,668.50/178,135,466.19 = 71,136,916.50/x - Step 3: Cross multiply
129,083,668.50x = 178,135,466.19 × 71,136,916.50 - Step 4: Simplify right side
129,083,668.50x = 12,672,007,784,046,602 - Step 5: Solve for x
x = 12,672,007,784,046,602/129,083,668.50 - Step 6: Final answer
x = 98,168,946.79
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.