Finding the Fourth Proportional to 128,736,414.30, 193,104,621.45 and 31,691,351.10
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Solution
The fourth proportional to 128,736,414.30, 193,104,621.45 and 31,691,351.10 is: 47,537,026.65
Step by Step Solution
- Step 1: Write the proportion equation
128,736,414.30 : 193,104,621.45 = 31,691,351.10 : x - Step 2: Convert to fraction form
128,736,414.30/193,104,621.45 = 31,691,351.10/x - Step 3: Cross multiply
128,736,414.30x = 193,104,621.45 × 31,691,351.10 - Step 4: Simplify right side
128,736,414.30x = 6,119,746,357,404,541 - Step 5: Solve for x
x = 6,119,746,357,404,541/128,736,414.30 - Step 6: Final answer
x = 47,537,026.65
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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.