Finding the Fourth Proportional to 135,902.52, 187,721.97 and 103,439.94
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Solution
The fourth proportional to 135,902.52, 187,721.97 and 103,439.94 is: 142,881.45
Step by Step Solution
- Step 1: Write the proportion equation
135,902.52 : 187,721.97 = 103,439.94 : x - Step 2: Convert to fraction form
135,902.52/187,721.97 = 103,439.94/x - Step 3: Cross multiply
135,902.52x = 187,721.97 × 103,439.94 - Step 4: Simplify right side
135,902.52x = 19,417,949,313.48 - Step 5: Solve for x
x = 19,417,949,313.48/135,902.52 - Step 6: Final answer
x = 142,881.45
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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.