Finding the Fourth Proportional to 153,361.05, 211,633.07 and 86,280.09
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Solution
The fourth proportional to 153,361.05, 211,633.07 and 86,280.09 is: 119,063.61
Step by Step Solution
- Step 1: Write the proportion equation
153,361.05 : 211,633.07 = 86,280.09 : x - Step 2: Convert to fraction form
153,361.05/211,633.07 = 86,280.09/x - Step 3: Cross multiply
153,361.05x = 211,633.07 × 86,280.09 - Step 4: Simplify right side
153,361.05x = 18,259,719,895.18 - Step 5: Solve for x
x = 18,259,719,895.18/153,361.05 - Step 6: Final answer
x = 119,063.61
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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.