Finding the Fourth Proportional to 121,946.52, 168,286.68 and 68,235.06
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Solution
The fourth proportional to 121,946.52, 168,286.68 and 68,235.06 is: 94,164.65
Step by Step Solution
- Step 1: Write the proportion equation
121,946.52 : 168,286.68 = 68,235.06 : x - Step 2: Convert to fraction form
121,946.52/168,286.68 = 68,235.06/x - Step 3: Cross multiply
121,946.52x = 168,286.68 × 68,235.06 - Step 4: Simplify right side
121,946.52x = 11,483,051,707.00 - Step 5: Solve for x
x = 11,483,051,707.00/121,946.52 - Step 6: Final answer
x = 94,164.65
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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.