Finding the Fourth Proportional to 128,306,043.30, 192,081,151.35 and 120,831,752.10
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Solution
The fourth proportional to 128,306,043.30, 192,081,151.35 and 120,831,752.10 is: 180,891,729.38
Step by Step Solution
- Step 1: Write the proportion equation
128,306,043.30 : 192,081,151.35 = 120,831,752.10 : x - Step 2: Convert to fraction form
128,306,043.30/192,081,151.35 = 120,831,752.10/x - Step 3: Cross multiply
128,306,043.30x = 192,081,151.35 × 120,831,752.10 - Step 4: Simplify right side
128,306,043.30x = 23,209,502,063,005,780 - Step 5: Solve for x
x = 23,209,502,063,005,780/128,306,043.30 - Step 6: Final answer
x = 180,891,729.38
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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.