Finding the Fourth Proportional to 128,254.68, 176,993.55 and 74,520.09
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Solution
The fourth proportional to 128,254.68, 176,993.55 and 74,520.09 is: 102,838.94
Step by Step Solution
- Step 1: Write the proportion equation
128,254.68 : 176,993.55 = 74,520.09 : x - Step 2: Convert to fraction form
128,254.68/176,993.55 = 74,520.09/x - Step 3: Cross multiply
128,254.68x = 176,993.55 × 74,520.09 - Step 4: Simplify right side
128,254.68x = 13,189,575,275.42 - Step 5: Solve for x
x = 13,189,575,275.42/128,254.68 - Step 6: Final answer
x = 102,838.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.