Finding the Fourth Proportional to 171,881.92, 257,829.86 and 81,878.37
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Solution
The fourth proportional to 171,881.92, 257,829.86 and 81,878.37 is: 122,820.88
Step by Step Solution
- Step 1: Write the proportion equation
171,881.92 : 257,829.86 = 81,878.37 : x - Step 2: Convert to fraction form
171,881.92/257,829.86 = 81,878.37/x - Step 3: Cross multiply
171,881.92x = 257,829.86 × 81,878.37 - Step 4: Simplify right side
171,881.92x = 21,110,688,674.13 - Step 5: Solve for x
x = 21,110,688,674.13/171,881.92 - Step 6: Final answer
x = 122,820.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.