Finding the Fourth Proportional to 135,982.19, 187,643.69 and 75,551.74
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Solution
The fourth proportional to 135,982.19, 187,643.69 and 75,551.74 is: 104,254.88
Step by Step Solution
- Step 1: Write the proportion equation
135,982.19 : 187,643.69 = 75,551.74 : x - Step 2: Convert to fraction form
135,982.19/187,643.69 = 75,551.74/x - Step 3: Cross multiply
135,982.19x = 187,643.69 × 75,551.74 - Step 4: Simplify right side
135,982.19x = 14,176,806,715.97 - Step 5: Solve for x
x = 14,176,806,715.97/135,982.19 - Step 6: Final answer
x = 104,254.88
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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.