Finding the Fourth Proportional to 128,695.16, 193,110.05 and 93,447.64
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Solution
The fourth proportional to 128,695.16, 193,110.05 and 93,447.64 is: 140,220.33
Step by Step Solution
- Step 1: Write the proportion equation
128,695.16 : 193,110.05 = 93,447.64 : x - Step 2: Convert to fraction form
128,695.16/193,110.05 = 93,447.64/x - Step 3: Cross multiply
128,695.16x = 193,110.05 × 93,447.64 - Step 4: Simplify right side
128,695.16x = 18,045,677,467.23 - Step 5: Solve for x
x = 18,045,677,467.23/128,695.16 - Step 6: Final answer
x = 140,220.33
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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.