Finding the Fourth Proportional to 168,068,419.30, 252,102,628.95 and 99,876,009.70
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Solution
The fourth proportional to 168,068,419.30, 252,102,628.95 and 99,876,009.70 is: 149,814,014.55
Step by Step Solution
- Step 1: Write the proportion equation
168,068,419.30 : 252,102,628.95 = 99,876,009.70 : x - Step 2: Convert to fraction form
168,068,419.30/252,102,628.95 = 99,876,009.70/x - Step 3: Cross multiply
168,068,419.30x = 252,102,628.95 × 99,876,009.70 - Step 4: Simplify right side
168,068,419.30x = 25,179,004,614,405,700 - Step 5: Solve for x
x = 25,179,004,614,405,700/168,068,419.30 - Step 6: Final answer
x = 149,814,014.55
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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.