Finding the Fourth Proportional to 158,973.12, 219,382.83 and 87,357.75
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Solution
The fourth proportional to 158,973.12, 219,382.83 and 87,357.75 is: 120,553.65
Step by Step Solution
- Step 1: Write the proportion equation
158,973.12 : 219,382.83 = 87,357.75 : x - Step 2: Convert to fraction form
158,973.12/219,382.83 = 87,357.75/x - Step 3: Cross multiply
158,973.12x = 219,382.83 × 87,357.75 - Step 4: Simplify right side
158,973.12x = 19,164,790,417.43 - Step 5: Solve for x
x = 19,164,790,417.43/158,973.12 - Step 6: Final answer
x = 120,553.65
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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.