Finding the Fourth Proportional to 136,160.05, 187,887.70 and 78,787.93
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Solution
The fourth proportional to 136,160.05, 187,887.70 and 78,787.93 is: 108,719.72
Step by Step Solution
- Step 1: Write the proportion equation
136,160.05 : 187,887.70 = 78,787.93 : x - Step 2: Convert to fraction form
136,160.05/187,887.70 = 78,787.93/x - Step 3: Cross multiply
136,160.05x = 187,887.70 × 78,787.93 - Step 4: Simplify right side
136,160.05x = 14,803,282,016.02 - Step 5: Solve for x
x = 14,803,282,016.02/136,160.05 - Step 6: Final answer
x = 108,719.72
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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.