Finding the Fourth Proportional to 153,197.19, 211,409.07 and 85,212.71
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Solution
The fourth proportional to 153,197.19, 211,409.07 and 85,212.71 is: 117,591.84
Step by Step Solution
- Step 1: Write the proportion equation
153,197.19 : 211,409.07 = 85,212.71 : x - Step 2: Convert to fraction form
153,197.19/211,409.07 = 85,212.71/x - Step 3: Cross multiply
153,197.19x = 211,409.07 × 85,212.71 - Step 4: Simplify right side
153,197.19x = 18,014,739,773.28 - Step 5: Solve for x
x = 18,014,739,773.28/153,197.19 - Step 6: Final answer
x = 117,591.84
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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.