Finding the Fourth Proportional to 158,921.98, 219,301.50 and 87,305.02
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Solution
The fourth proportional to 158,921.98, 219,301.50 and 87,305.02 is: 120,474.98
Step by Step Solution
- Step 1: Write the proportion equation
158,921.98 : 219,301.50 = 87,305.02 : x - Step 2: Convert to fraction form
158,921.98/219,301.50 = 87,305.02/x - Step 3: Cross multiply
158,921.98x = 219,301.50 × 87,305.02 - Step 4: Simplify right side
158,921.98x = 19,146,121,843.53 - Step 5: Solve for x
x = 19,146,121,843.53/158,921.98 - Step 6: Final answer
x = 120,474.98
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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.