Finding the Fourth Proportional to 157,241.08, 216,989.58 and 85,621.96
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Solution
The fourth proportional to 157,241.08, 216,989.58 and 85,621.96 is: 118,156.61
Step by Step Solution
- Step 1: Write the proportion equation
157,241.08 : 216,989.58 = 85,621.96 : x - Step 2: Convert to fraction form
157,241.08/216,989.58 = 85,621.96/x - Step 3: Cross multiply
157,241.08x = 216,989.58 × 85,621.96 - Step 4: Simplify right side
157,241.08x = 18,579,073,139.18 - Step 5: Solve for x
x = 18,579,073,139.18/157,241.08 - Step 6: Final answer
x = 118,156.61
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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.