Finding the Fourth Proportional to 128,045,512.36, 176,719,628.10 and 73,028,757.16
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Solution
The fourth proportional to 128,045,512.36, 176,719,628.10 and 73,028,757.16 is: 100,789,278.50
Step by Step Solution
- Step 1: Write the proportion equation
128,045,512.36 : 176,719,628.10 = 73,028,757.16 : x - Step 2: Convert to fraction form
128,045,512.36/176,719,628.10 = 73,028,757.16/x - Step 3: Cross multiply
128,045,512.36x = 176,719,628.10 × 73,028,757.16 - Step 4: Simplify right side
128,045,512.36x = 12,905,614,805,920,412 - Step 5: Solve for x
x = 12,905,614,805,920,412/128,045,512.36 - Step 6: Final answer
x = 100,789,278.50
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1.5x scale
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.