Finding the Fourth Proportional to 153,935.19, 212,465.97 and 90,293.49
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Solution
The fourth proportional to 153,935.19, 212,465.97 and 90,293.49 is: 124,625.79
Step by Step Solution
- Step 1: Write the proportion equation
153,935.19 : 212,465.97 = 90,293.49 : x - Step 2: Convert to fraction form
153,935.19/212,465.97 = 90,293.49/x - Step 3: Cross multiply
153,935.19x = 212,465.97 × 90,293.49 - Step 4: Simplify right side
153,935.19x = 19,184,293,937.54 - Step 5: Solve for x
x = 19,184,293,937.54/153,935.19 - Step 6: Final answer
x = 124,625.79
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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.