Finding the Fourth Proportional to 121,642.08, 167,864.40 and 67,927.92
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Solution
The fourth proportional to 121,642.08, 167,864.40 and 67,927.92 is: 93,739.60
Step by Step Solution
- Step 1: Write the proportion equation
121,642.08 : 167,864.40 = 67,927.92 : x - Step 2: Convert to fraction form
121,642.08/167,864.40 = 67,927.92/x - Step 3: Cross multiply
121,642.08x = 167,864.40 × 67,927.92 - Step 4: Simplify right side
121,642.08x = 11,402,679,534.05 - Step 5: Solve for x
x = 11,402,679,534.05/121,642.08 - Step 6: Final answer
x = 93,739.60
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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.