Finding the Fourth Proportional to 159,279.84, 219,808.56 and 91,302.72
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Solution
The fourth proportional to 159,279.84, 219,808.56 and 91,302.72 is: 125,999.12
Step by Step Solution
- Step 1: Write the proportion equation
159,279.84 : 219,808.56 = 91,302.72 : x - Step 2: Convert to fraction form
159,279.84/219,808.56 = 91,302.72/x - Step 3: Cross multiply
159,279.84x = 219,808.56 × 91,302.72 - Step 4: Simplify right side
159,279.84x = 20,069,119,407.28 - Step 5: Solve for x
x = 20,069,119,407.28/159,279.84 - Step 6: Final answer
x = 125,999.12
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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.