Finding the Fourth Proportional to 128,920,166.84, 193,263,591.56 and 47,019,843.52
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Solution
The fourth proportional to 128,920,166.84, 193,263,591.56 and 47,019,843.52 is: 70,487,217.45
Step by Step Solution
- Step 1: Write the proportion equation
128,920,166.84 : 193,263,591.56 = 47,019,843.52 : x - Step 2: Convert to fraction form
128,920,166.84/193,263,591.56 = 47,019,843.52/x - Step 3: Cross multiply
128,920,166.84x = 193,263,591.56 × 47,019,843.52 - Step 4: Simplify right side
128,920,166.84x = 9,087,223,833,264,394 - Step 5: Solve for x
x = 9,087,223,833,264,394/128,920,166.84 - Step 6: Final answer
x = 70,487,217.45
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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.