Finding the Fourth Proportional to 128,755,890.36, 177,680,665.26 and 70,809,138.36
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Solution
The fourth proportional to 128,755,890.36, 177,680,665.26 and 70,809,138.36 is: 97,715,256.17
Step by Step Solution
- Step 1: Write the proportion equation
128,755,890.36 : 177,680,665.26 = 70,809,138.36 : x - Step 2: Convert to fraction form
128,755,890.36/177,680,665.26 = 70,809,138.36/x - Step 3: Cross multiply
128,755,890.36x = 177,680,665.26 × 70,809,138.36 - Step 4: Simplify right side
128,755,890.36x = 12,581,414,810,292,184 - Step 5: Solve for x
x = 12,581,414,810,292,184/128,755,890.36 - Step 6: Final answer
x = 97,715,256.17
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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.