Finding the Fourth Proportional to 157,232.96, 216,978.68 and 85,611.68
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Solution
The fourth proportional to 157,232.96, 216,978.68 and 85,611.68 is: 118,142.59
Step by Step Solution
- Step 1: Write the proportion equation
157,232.96 : 216,978.68 = 85,611.68 : x - Step 2: Convert to fraction form
157,232.96/216,978.68 = 85,611.68/x - Step 3: Cross multiply
157,232.96x = 216,978.68 × 85,611.68 - Step 4: Simplify right side
157,232.96x = 18,575,908,890.92 - Step 5: Solve for x
x = 18,575,908,890.92/157,232.96 - Step 6: Final answer
x = 118,142.59
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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.