Finding the Fourth Proportional to 128,901,701.20, 193,069,116.60 and 68,246,568.40
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Solution
The fourth proportional to 128,901,701.20, 193,069,116.60 and 68,246,568.40 is: 102,219,788.79
Step by Step Solution
- Step 1: Write the proportion equation
128,901,701.20 : 193,069,116.60 = 68,246,568.40 : x - Step 2: Convert to fraction form
128,901,701.20/193,069,116.60 = 68,246,568.40/x - Step 3: Cross multiply
128,901,701.20x = 193,069,116.60 × 68,246,568.40 - Step 4: Simplify right side
128,901,701.20x = 13,176,304,671,969,476 - Step 5: Solve for x
x = 13,176,304,671,969,476/128,901,701.20 - Step 6: Final answer
x = 102,219,788.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.