Finding the Fourth Proportional to 154,947.18, 213,818.12 and 86,957.80
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Solution
The fourth proportional to 154,947.18, 213,818.12 and 86,957.80 is: 119,996.72
Step by Step Solution
- Step 1: Write the proportion equation
154,947.18 : 213,818.12 = 86,957.80 : x - Step 2: Convert to fraction form
154,947.18/213,818.12 = 86,957.80/x - Step 3: Cross multiply
154,947.18x = 213,818.12 × 86,957.80 - Step 4: Simplify right side
154,947.18x = 18,593,153,315.34 - Step 5: Solve for x
x = 18,593,153,315.34/154,947.18 - Step 6: Final answer
x = 119,996.72
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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.