Finding the Fourth Proportional to 155,026.80, 213,934.68 and 87,957.36
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Solution
The fourth proportional to 155,026.80, 213,934.68 and 87,957.36 is: 121,379.85
Step by Step Solution
- Step 1: Write the proportion equation
155,026.80 : 213,934.68 = 87,957.36 : x - Step 2: Convert to fraction form
155,026.80/213,934.68 = 87,957.36/x - Step 3: Cross multiply
155,026.80x = 213,934.68 × 87,957.36 - Step 4: Simplify right side
155,026.80x = 18,817,129,665.24 - Step 5: Solve for x
x = 18,817,129,665.24/155,026.80 - Step 6: Final answer
x = 121,379.85
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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.