Finding the Fourth Proportional to 136,845,946.62, 188,696,032.11 and 87,207,636.78
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Solution
The fourth proportional to 136,845,946.62, 188,696,032.11 and 87,207,636.78 is: 120,250,072.70
Step by Step Solution
- Step 1: Write the proportion equation
136,845,946.62 : 188,696,032.11 = 87,207,636.78 : x - Step 2: Convert to fraction form
136,845,946.62/188,696,032.11 = 87,207,636.78/x - Step 3: Cross multiply
136,845,946.62x = 188,696,032.11 × 87,207,636.78 - Step 4: Simplify right side
136,845,946.62x = 16,455,735,030,076,098 - Step 5: Solve for x
x = 16,455,735,030,076,098/136,845,946.62 - Step 6: Final answer
x = 120,250,072.70
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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.