Finding the Fourth Proportional to 126,017,115.30, 189,025,672.95 and 74,148,473.70
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Solution
The fourth proportional to 126,017,115.30, 189,025,672.95 and 74,148,473.70 is: 111,222,710.55
Step by Step Solution
- Step 1: Write the proportion equation
126,017,115.30 : 189,025,672.95 = 74,148,473.70 : x - Step 2: Convert to fraction form
126,017,115.30/189,025,672.95 = 74,148,473.70/x - Step 3: Cross multiply
126,017,115.30x = 189,025,672.95 × 74,148,473.70 - Step 4: Simplify right side
126,017,115.30x = 14,015,965,139,357,876 - Step 5: Solve for x
x = 14,015,965,139,357,876/126,017,115.30 - Step 6: Final answer
x = 111,222,710.55
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1.5x scale
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.