Finding the Fourth Proportional to 131,564.70, 197,347.05 and 121,427.10
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Solution
The fourth proportional to 131,564.70, 197,347.05 and 121,427.10 is: 182,140.65
Step by Step Solution
- Step 1: Write the proportion equation
131,564.70 : 197,347.05 = 121,427.10 : x - Step 2: Convert to fraction form
131,564.70/197,347.05 = 121,427.10/x - Step 3: Cross multiply
131,564.70x = 197,347.05 × 121,427.10 - Step 4: Simplify right side
131,564.70x = 23,963,279,975.06 - Step 5: Solve for x
x = 23,963,279,975.06/131,564.70 - Step 6: Final answer
x = 182,140.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.