Finding the Fourth Proportional to 136,224.74, 187,994.58 and 85,221.17
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Solution
The fourth proportional to 136,224.74, 187,994.58 and 85,221.17 is: 117,607.99
Step by Step Solution
- Step 1: Write the proportion equation
136,224.74 : 187,994.58 = 85,221.17 : x - Step 2: Convert to fraction form
136,224.74/187,994.58 = 85,221.17/x - Step 3: Cross multiply
136,224.74x = 187,994.58 × 85,221.17 - Step 4: Simplify right side
136,224.74x = 16,021,118,061.26 - Step 5: Solve for x
x = 16,021,118,061.26/136,224.74 - Step 6: Final answer
x = 117,607.99
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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.