Finding the Fourth Proportional to 131,511.68, 197,317.18 and 78,957.80
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Solution
The fourth proportional to 131,511.68, 197,317.18 and 78,957.80 is: 118,466.52
Step by Step Solution
- Step 1: Write the proportion equation
131,511.68 : 197,317.18 = 78,957.80 : x - Step 2: Convert to fraction form
131,511.68/197,317.18 = 78,957.80/x - Step 3: Cross multiply
131,511.68x = 197,317.18 × 78,957.80 - Step 4: Simplify right side
131,511.68x = 15,579,730,435.00 - Step 5: Solve for x
x = 15,579,730,435.00/131,511.68 - Step 6: Final answer
x = 118,466.52
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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.