Finding the Fourth Proportional to 158,477.13, 218,307.83 and 135,742.05
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Solution
The fourth proportional to 158,477.13, 218,307.83 and 135,742.05 is: 186,989.45
Step by Step Solution
- Step 1: Write the proportion equation
158,477.13 : 218,307.83 = 135,742.05 : x - Step 2: Convert to fraction form
158,477.13/218,307.83 = 135,742.05/x - Step 3: Cross multiply
158,477.13x = 218,307.83 × 135,742.05 - Step 4: Simplify right side
158,477.13x = 29,633,551,696.54 - Step 5: Solve for x
x = 29,633,551,696.54/158,477.13 - Step 6: Final answer
x = 186,989.45
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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.