Finding the Fourth Proportional to 117,102,612.79, 161,602,562.12 and 64,892,520.15
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Solution
The fourth proportional to 117,102,612.79, 161,602,562.12 and 64,892,520.15 is: 89,552,207.84
Step by Step Solution
- Step 1: Write the proportion equation
117,102,612.79 : 161,602,562.12 = 64,892,520.15 : x - Step 2: Convert to fraction form
117,102,612.79/161,602,562.12 = 64,892,520.15/x - Step 3: Cross multiply
117,102,612.79x = 161,602,562.12 × 64,892,520.15 - Step 4: Simplify right side
117,102,612.79x = 10,486,797,518,663,726 - Step 5: Solve for x
x = 10,486,797,518,663,726/117,102,612.79 - Step 6: Final answer
x = 89,552,207.84
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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.