Finding the Fourth Proportional to 156,993.18, 216,652.13 and 85,374.75
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Solution
The fourth proportional to 156,993.18, 216,652.13 and 85,374.75 is: 117,817.99
Step by Step Solution
- Step 1: Write the proportion equation
156,993.18 : 216,652.13 = 85,374.75 : x - Step 2: Convert to fraction form
156,993.18/216,652.13 = 85,374.75/x - Step 3: Cross multiply
156,993.18x = 216,652.13 × 85,374.75 - Step 4: Simplify right side
156,993.18x = 18,496,621,435.72 - Step 5: Solve for x
x = 18,496,621,435.72/156,993.18 - Step 6: Final answer
x = 117,817.99
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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.