Finding the Fourth Proportional to 112,327,207.20, 168,154,887.60 and 66,865,600.80
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Solution
The fourth proportional to 112,327,207.20, 168,154,887.60 and 66,865,600.80 is: 100,098,434.45
Step by Step Solution
- Step 1: Write the proportion equation
112,327,207.20 : 168,154,887.60 = 66,865,600.80 : x - Step 2: Convert to fraction form
112,327,207.20/168,154,887.60 = 66,865,600.80/x - Step 3: Cross multiply
112,327,207.20x = 168,154,887.60 × 66,865,600.80 - Step 4: Simplify right side
112,327,207.20x = 11,243,777,586,830,470 - Step 5: Solve for x
x = 11,243,777,586,830,470/112,327,207.20 - Step 6: Final answer
x = 100,098,434.45
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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.