Finding the Fourth Proportional to 158,511.10, 218,767.68 and 98,101.20
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Solution
The fourth proportional to 158,511.10, 218,767.68 and 98,101.20 is: 135,393.50
Step by Step Solution
- Step 1: Write the proportion equation
158,511.10 : 218,767.68 = 98,101.20 : x - Step 2: Convert to fraction form
158,511.10/218,767.68 = 98,101.20/x - Step 3: Cross multiply
158,511.10x = 218,767.68 × 98,101.20 - Step 4: Simplify right side
158,511.10x = 21,461,371,929.22 - Step 5: Solve for x
x = 21,461,371,929.22/158,511.10 - Step 6: Final answer
x = 135,393.50
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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.