Finding the Fourth Proportional to 168,490,821.60, 252,736,232.40 and 66,220,869.60
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Solution
The fourth proportional to 168,490,821.60, 252,736,232.40 and 66,220,869.60 is: 99,331,304.40
Step by Step Solution
- Step 1: Write the proportion equation
168,490,821.60 : 252,736,232.40 = 66,220,869.60 : x - Step 2: Convert to fraction form
168,490,821.60/252,736,232.40 = 66,220,869.60/x - Step 3: Cross multiply
168,490,821.60x = 252,736,232.40 × 66,220,869.60 - Step 4: Simplify right side
168,490,821.60x = 16,736,413,088,955,696 - Step 5: Solve for x
x = 16,736,413,088,955,696/168,490,821.60 - Step 6: Final answer
x = 99,331,304.40
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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.