Finding the Fourth Proportional to 121,695.19, 167,830.26 and 101,344.65
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Solution
The fourth proportional to 121,695.19, 167,830.26 and 101,344.65 is: 139,764.76
Step by Step Solution
- Step 1: Write the proportion equation
121,695.19 : 167,830.26 = 101,344.65 : x - Step 2: Convert to fraction form
121,695.19/167,830.26 = 101,344.65/x - Step 3: Cross multiply
121,695.19x = 167,830.26 × 101,344.65 - Step 4: Simplify right side
121,695.19x = 17,008,698,519.77 - Step 5: Solve for x
x = 17,008,698,519.77/121,695.19 - Step 6: Final answer
x = 139,764.76
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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.