Finding the Fourth Proportional to 128,336.19, 192,465.05 and 45,210.75
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Solution
The fourth proportional to 128,336.19, 192,465.05 and 45,210.75 is: 67,802.30
Step by Step Solution
- Step 1: Write the proportion equation
128,336.19 : 192,465.05 = 45,210.75 : x - Step 2: Convert to fraction form
128,336.19/192,465.05 = 45,210.75/x - Step 3: Cross multiply
128,336.19x = 192,465.05 × 45,210.75 - Step 4: Simplify right side
128,336.19x = 8,701,489,033.23 - Step 5: Solve for x
x = 8,701,489,033.23/128,336.19 - Step 6: Final answer
x = 67,802.30
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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.