Finding the Fourth Proportional to 121,846,898.34, 168,147,738.54 and 66,092,179.68
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Solution
The fourth proportional to 121,846,898.34, 168,147,738.54 and 66,092,179.68 is: 91,206,675.75
Step by Step Solution
- Step 1: Write the proportion equation
121,846,898.34 : 168,147,738.54 = 66,092,179.68 : x - Step 2: Convert to fraction form
121,846,898.34/168,147,738.54 = 66,092,179.68/x - Step 3: Cross multiply
121,846,898.34x = 168,147,738.54 × 66,092,179.68 - Step 4: Simplify right side
121,846,898.34x = 11,113,250,548,371,340 - Step 5: Solve for x
x = 11,113,250,548,371,340/121,846,898.34 - Step 6: Final answer
x = 91,206,675.75
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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.