Finding the Fourth Proportional to 121,228.98, 167,132.91 and 84,881.54
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Solution
The fourth proportional to 121,228.98, 167,132.91 and 84,881.54 is: 117,022.34
Step by Step Solution
- Step 1: Write the proportion equation
121,228.98 : 167,132.91 = 84,881.54 : x - Step 2: Convert to fraction form
121,228.98/167,132.91 = 84,881.54/x - Step 3: Cross multiply
121,228.98x = 167,132.91 × 84,881.54 - Step 4: Simplify right side
121,228.98x = 14,186,498,785.48 - Step 5: Solve for x
x = 14,186,498,785.48/121,228.98 - Step 6: Final answer
x = 117,022.34
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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.