Finding the Fourth Proportional to 153,275.12, 211,517.60 and 86,207.12
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Solution
The fourth proportional to 153,275.12, 211,517.60 and 86,207.12 is: 118,964.66
Step by Step Solution
- Step 1: Write the proportion equation
153,275.12 : 211,517.60 = 86,207.12 : x - Step 2: Convert to fraction form
153,275.12/211,517.60 = 86,207.12/x - Step 3: Cross multiply
153,275.12x = 211,517.60 × 86,207.12 - Step 4: Simplify right side
153,275.12x = 18,234,323,125.31 - Step 5: Solve for x
x = 18,234,323,125.31/153,275.12 - Step 6: Final answer
x = 118,964.66
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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.