Finding the Fourth Proportional to 138,726,528.20, 208,026,806.70 and 52,436,256.20
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Solution
The fourth proportional to 138,726,528.20, 208,026,806.70 and 52,436,256.20 is: 78,630,576.82
Step by Step Solution
- Step 1: Write the proportion equation
138,726,528.20 : 208,026,806.70 = 52,436,256.20 : x - Step 2: Convert to fraction form
138,726,528.20/208,026,806.70 = 52,436,256.20/x - Step 3: Cross multiply
138,726,528.20x = 208,026,806.70 × 52,436,256.20 - Step 4: Simplify right side
138,726,528.20x = 10,908,146,932,589,076 - Step 5: Solve for x
x = 10,908,146,932,589,076/138,726,528.20 - Step 6: Final answer
x = 78,630,576.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.