Finding the Fourth Proportional to 135,153.95, 186,504.91 and 74,721.06
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Solution
The fourth proportional to 135,153.95, 186,504.91 and 74,721.06 is: 103,110.89
Step by Step Solution
- Step 1: Write the proportion equation
135,153.95 : 186,504.91 = 74,721.06 : x - Step 2: Convert to fraction form
135,153.95/186,504.91 = 74,721.06/x - Step 3: Cross multiply
135,153.95x = 186,504.91 × 74,721.06 - Step 4: Simplify right side
135,153.95x = 13,935,844,570.40 - Step 5: Solve for x
x = 13,935,844,570.40/135,153.95 - Step 6: Final answer
x = 103,110.89
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1.5x scale
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.