Finding the Fourth Proportional to 121,929.67, 168,320.48 and 91,726.52
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Solution
The fourth proportional to 121,929.67, 168,320.48 and 91,726.52 is: 126,625.88
Step by Step Solution
- Step 1: Write the proportion equation
121,929.67 : 168,320.48 = 91,726.52 : x - Step 2: Convert to fraction form
121,929.67/168,320.48 = 91,726.52/x - Step 3: Cross multiply
121,929.67x = 168,320.48 × 91,726.52 - Step 4: Simplify right side
121,929.67x = 15,439,451,875.13 - Step 5: Solve for x
x = 15,439,451,875.13/121,929.67 - Step 6: Final answer
x = 126,625.88
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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.