Finding the Fourth Proportional to 159,431.60, 219,775.28 and 131,088.08
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Solution
The fourth proportional to 159,431.60, 219,775.28 and 131,088.08 is: 180,703.95
Step by Step Solution
- Step 1: Write the proportion equation
159,431.60 : 219,775.28 = 131,088.08 : x - Step 2: Convert to fraction form
159,431.60/219,775.28 = 131,088.08/x - Step 3: Cross multiply
159,431.60x = 219,775.28 × 131,088.08 - Step 4: Simplify right side
159,431.60x = 28,809,919,486.66 - Step 5: Solve for x
x = 28,809,919,486.66/159,431.60 - Step 6: Final answer
x = 180,703.95
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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.