Finding the Fourth Proportional to 158,929.31, 219,326.45 and 87,315.99
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Solution
The fourth proportional to 158,929.31, 219,326.45 and 87,315.99 is: 120,498.27
Step by Step Solution
- Step 1: Write the proportion equation
158,929.31 : 219,326.45 = 87,315.99 : x - Step 2: Convert to fraction form
158,929.31/219,326.45 = 87,315.99/x - Step 3: Cross multiply
158,929.31x = 219,326.45 × 87,315.99 - Step 4: Simplify right side
158,929.31x = 19,150,705,678.36 - Step 5: Solve for x
x = 19,150,705,678.36/158,929.31 - Step 6: Final answer
x = 120,498.27
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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.