Finding the Fourth Proportional to 158,724.24, 219,045.76 and 87,106.80
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Solution
The fourth proportional to 158,724.24, 219,045.76 and 87,106.80 is: 120,210.85
Step by Step Solution
- Step 1: Write the proportion equation
158,724.24 : 219,045.76 = 87,106.80 : x - Step 2: Convert to fraction form
158,724.24/219,045.76 = 87,106.80/x - Step 3: Cross multiply
158,724.24x = 219,045.76 × 87,106.80 - Step 4: Simplify right side
158,724.24x = 19,080,375,207.17 - Step 5: Solve for x
x = 19,080,375,207.17/158,724.24 - Step 6: Final answer
x = 120,210.85
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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.