Finding the Fourth Proportional to 121,975.81, 168,344.23 and 70,283.01
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Solution
The fourth proportional to 121,975.81, 168,344.23 and 70,283.01 is: 97,000.70
Step by Step Solution
- Step 1: Write the proportion equation
121,975.81 : 168,344.23 = 70,283.01 : x - Step 2: Convert to fraction form
121,975.81/168,344.23 = 70,283.01/x - Step 3: Cross multiply
121,975.81x = 168,344.23 × 70,283.01 - Step 4: Simplify right side
121,975.81x = 11,831,739,200.53 - Step 5: Solve for x
x = 11,831,739,200.53/121,975.81 - Step 6: Final answer
x = 97,000.70
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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.