Finding the Fourth Proportional to 121,908.91, 168,248.24 and 68,207.53
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Solution
The fourth proportional to 121,908.91, 168,248.24 and 68,207.53 is: 94,134.19
Step by Step Solution
- Step 1: Write the proportion equation
121,908.91 : 168,248.24 = 68,207.53 : x - Step 2: Convert to fraction form
121,908.91/168,248.24 = 68,207.53/x - Step 3: Cross multiply
121,908.91x = 168,248.24 × 68,207.53 - Step 4: Simplify right side
121,908.91x = 11,475,796,877.25 - Step 5: Solve for x
x = 11,475,796,877.25/121,908.91 - Step 6: Final answer
x = 94,134.19
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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.