Finding the Fourth Proportional to 138,600,531.42, 191,268,737.17 and 76,720,869.99
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Solution
The fourth proportional to 138,600,531.42, 191,268,737.17 and 76,720,869.99 is: 105,874,802.70
Step by Step Solution
- Step 1: Write the proportion equation
138,600,531.42 : 191,268,737.17 = 76,720,869.99 : x - Step 2: Convert to fraction form
138,600,531.42/191,268,737.17 = 76,720,869.99/x - Step 3: Cross multiply
138,600,531.42x = 191,268,737.17 × 76,720,869.99 - Step 4: Simplify right side
138,600,531.42x = 14,674,303,917,571,048 - Step 5: Solve for x
x = 14,674,303,917,571,048/138,600,531.42 - Step 6: Final answer
x = 105,874,802.70
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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.