Finding the Fourth Proportional to 128,564.31, 192,746.57 and 48,600.99
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Solution
The fourth proportional to 128,564.31, 192,746.57 and 48,600.99 is: 72,863.72
Step by Step Solution
- Step 1: Write the proportion equation
128,564.31 : 192,746.57 = 48,600.99 : x - Step 2: Convert to fraction form
128,564.31/192,746.57 = 48,600.99/x - Step 3: Cross multiply
128,564.31x = 192,746.57 × 48,600.99 - Step 4: Simplify right side
128,564.31x = 9,367,673,878.10 - Step 5: Solve for x
x = 9,367,673,878.10/128,564.31 - Step 6: Final answer
x = 72,863.72
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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.