Finding the Fourth Proportional to 128,387.01, 192,663.14 and 69,263.49
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Solution
The fourth proportional to 128,387.01, 192,663.14 and 69,263.49 is: 103,939.81
Step by Step Solution
- Step 1: Write the proportion equation
128,387.01 : 192,663.14 = 69,263.49 : x - Step 2: Convert to fraction form
128,387.01/192,663.14 = 69,263.49/x - Step 3: Cross multiply
128,387.01x = 192,663.14 × 69,263.49 - Step 4: Simplify right side
128,387.01x = 13,344,521,124.44 - Step 5: Solve for x
x = 13,344,521,124.44/128,387.01 - Step 6: Final answer
x = 103,939.81
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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.