Finding the Fourth Proportional to 128,949,630.26, 193,061,217.86 and 115,874,188.76
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Solution
The fourth proportional to 128,949,630.26, 193,061,217.86 and 115,874,188.76 is: 173,484,886.73
Step by Step Solution
- Step 1: Write the proportion equation
128,949,630.26 : 193,061,217.86 = 115,874,188.76 : x - Step 2: Convert to fraction form
128,949,630.26/193,061,217.86 = 115,874,188.76/x - Step 3: Cross multiply
128,949,630.26x = 193,061,217.86 × 115,874,188.76 - Step 4: Simplify right side
128,949,630.26x = 22,370,811,999,797,928 - Step 5: Solve for x
x = 22,370,811,999,797,928/128,949,630.26 - Step 6: Final answer
x = 173,484,886.73
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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.