Finding the Fourth Proportional to 120,787,986.18, 166,689,338.52 and 68,575,956.42
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Solution
The fourth proportional to 120,787,986.18, 166,689,338.52 and 68,575,956.42 is: 94,635,908.55
Step by Step Solution
- Step 1: Write the proportion equation
120,787,986.18 : 166,689,338.52 = 68,575,956.42 : x - Step 2: Convert to fraction form
120,787,986.18/166,689,338.52 = 68,575,956.42/x - Step 3: Cross multiply
120,787,986.18x = 166,689,338.52 × 68,575,956.42 - Step 4: Simplify right side
120,787,986.18x = 11,430,880,814,026,148 - Step 5: Solve for x
x = 11,430,880,814,026,148/120,787,986.18 - Step 6: Final answer
x = 94,635,908.55
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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.