Finding the Fourth Proportional to 158,232.99, 218,361.86 and 86,617.59
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Solution
The fourth proportional to 158,232.99, 218,361.86 and 86,617.59 is: 119,532.45
Step by Step Solution
- Step 1: Write the proportion equation
158,232.99 : 218,361.86 = 86,617.59 : x - Step 2: Convert to fraction form
158,232.99/218,361.86 = 86,617.59/x - Step 3: Cross multiply
158,232.99x = 218,361.86 × 86,617.59 - Step 4: Simplify right side
158,232.99x = 18,913,977,628.03 - Step 5: Solve for x
x = 18,913,977,628.03/158,232.99 - Step 6: Final answer
x = 119,532.45
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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.