Finding the Fourth Proportional to 122,785.80, 169,442.67 and 69,070.88
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Solution
The fourth proportional to 122,785.80, 169,442.67 and 69,070.88 is: 95,316.84
Step by Step Solution
- Step 1: Write the proportion equation
122,785.80 : 169,442.67 = 69,070.88 : x - Step 2: Convert to fraction form
122,785.80/169,442.67 = 69,070.88/x - Step 3: Cross multiply
122,785.80x = 169,442.67 × 69,070.88 - Step 4: Simplify right side
122,785.80x = 11,703,554,750.06 - Step 5: Solve for x
x = 11,703,554,750.06/122,785.80 - Step 6: Final answer
x = 95,316.84
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1.5x scale
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.