Finding the Fourth Proportional to 117,622,356.60, 176,433,534.90 and 78,880,307.70
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Solution
The fourth proportional to 117,622,356.60, 176,433,534.90 and 78,880,307.70 is: 118,320,461.55
Step by Step Solution
- Step 1: Write the proportion equation
117,622,356.60 : 176,433,534.90 = 78,880,307.70 : x - Step 2: Convert to fraction form
117,622,356.60/176,433,534.90 = 78,880,307.70/x - Step 3: Cross multiply
117,622,356.60x = 176,433,534.90 × 78,880,307.70 - Step 4: Simplify right side
117,622,356.60x = 13,917,131,521,510,690 - Step 5: Solve for x
x = 13,917,131,521,510,690/117,622,356.60 - Step 6: Final answer
x = 118,320,461.55
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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.