Finding the Fourth Proportional to 139,343,349.42, 192,010,478.46 and 107,789,787.06
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Solution
The fourth proportional to 139,343,349.42, 192,010,478.46 and 107,789,787.06 is: 148,530,724.09
Step by Step Solution
- Step 1: Write the proportion equation
139,343,349.42 : 192,010,478.46 = 107,789,787.06 : x - Step 2: Convert to fraction form
139,343,349.42/192,010,478.46 = 107,789,787.06/x - Step 3: Cross multiply
139,343,349.42x = 192,010,478.46 × 107,789,787.06 - Step 4: Simplify right side
139,343,349.42x = 20,696,768,586,492,120 - Step 5: Solve for x
x = 20,696,768,586,492,120/139,343,349.42 - Step 6: Final answer
x = 148,530,724.09
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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.