Finding the Fourth Proportional to 135,972.74, 187,627.94 and 78,602.97
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Solution
The fourth proportional to 135,972.74, 187,627.94 and 78,602.97 is: 108,463.75
Step by Step Solution
- Step 1: Write the proportion equation
135,972.74 : 187,627.94 = 78,602.97 : x - Step 2: Convert to fraction form
135,972.74/187,627.94 = 78,602.97/x - Step 3: Cross multiply
135,972.74x = 187,627.94 × 78,602.97 - Step 4: Simplify right side
135,972.74x = 14,748,112,945.97 - Step 5: Solve for x
x = 14,748,112,945.97/135,972.74 - Step 6: Final answer
x = 108,463.75
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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.