Finding the Fourth Proportional to 138,750.36, 191,557.98 and 91,087.08
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Solution
The fourth proportional to 138,750.36, 191,557.98 and 91,087.08 is: 125,754.32
Step by Step Solution
- Step 1: Write the proportion equation
138,750.36 : 191,557.98 = 91,087.08 : x - Step 2: Convert to fraction form
138,750.36/191,557.98 = 91,087.08/x - Step 3: Cross multiply
138,750.36x = 191,557.98 × 91,087.08 - Step 4: Simplify right side
138,750.36x = 17,448,457,048.90 - Step 5: Solve for x
x = 17,448,457,048.90/138,750.36 - Step 6: Final answer
x = 125,754.32
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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.