Finding the Fourth Proportional to 158,821.54, 219,174.11 and 87,206.19
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Solution
The fourth proportional to 158,821.54, 219,174.11 and 87,206.19 is: 120,344.75
Step by Step Solution
- Step 1: Write the proportion equation
158,821.54 : 219,174.11 = 87,206.19 : x - Step 2: Convert to fraction form
158,821.54/219,174.11 = 87,206.19/x - Step 3: Cross multiply
158,821.54x = 219,174.11 × 87,206.19 - Step 4: Simplify right side
158,821.54x = 19,113,339,079.74 - Step 5: Solve for x
x = 19,113,339,079.74/158,821.54 - Step 6: Final answer
x = 120,344.75
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1.5x scale
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.