Finding the Fourth Proportional to 139,471.76, 209,173.80 and 97,725.44
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Solution
The fourth proportional to 139,471.76, 209,173.80 and 97,725.44 is: 146,564.45
Step by Step Solution
- Step 1: Write the proportion equation
139,471.76 : 209,173.80 = 97,725.44 : x - Step 2: Convert to fraction form
139,471.76/209,173.80 = 97,725.44/x - Step 3: Cross multiply
139,471.76x = 209,173.80 × 97,725.44 - Step 4: Simplify right side
139,471.76x = 20,441,601,641.47 - Step 5: Solve for x
x = 20,441,601,641.47/139,471.76 - Step 6: Final answer
x = 146,564.45
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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.