Finding the Fourth Proportional to 158,720.48, 219,033.61 and 87,101.70
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Solution
The fourth proportional to 158,720.48, 219,033.61 and 87,101.70 is: 120,199.99
Step by Step Solution
- Step 1: Write the proportion equation
158,720.48 : 219,033.61 = 87,101.70 : x - Step 2: Convert to fraction form
158,720.48/219,033.61 = 87,101.70/x - Step 3: Cross multiply
158,720.48x = 219,033.61 × 87,101.70 - Step 4: Simplify right side
158,720.48x = 19,078,199,788.14 - Step 5: Solve for x
x = 19,078,199,788.14/158,720.48 - Step 6: Final answer
x = 120,199.99
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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.