Finding the Fourth Proportional to 180,728.60, 249,406.11 and 100,157.49
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Solution
The fourth proportional to 180,728.60, 249,406.11 and 100,157.49 is: 138,217.70
Step by Step Solution
- Step 1: Write the proportion equation
180,728.60 : 249,406.11 = 100,157.49 : x - Step 2: Convert to fraction form
180,728.60/249,406.11 = 100,157.49/x - Step 3: Cross multiply
180,728.60x = 249,406.11 × 100,157.49 - Step 4: Simplify right side
180,728.60x = 24,979,889,968.26 - Step 5: Solve for x
x = 24,979,889,968.26/180,728.60 - Step 6: Final answer
x = 138,217.70
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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.