Finding the Fourth Proportional to 145,811.36, 201,219.66 and 78,743.36
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Solution
The fourth proportional to 145,811.36, 201,219.66 and 78,743.36 is: 108,665.82
Step by Step Solution
- Step 1: Write the proportion equation
145,811.36 : 201,219.66 = 78,743.36 : x - Step 2: Convert to fraction form
145,811.36/201,219.66 = 78,743.36/x - Step 3: Cross multiply
145,811.36x = 201,219.66 × 78,743.36 - Step 4: Simplify right side
145,811.36x = 15,844,711,120.36 - Step 5: Solve for x
x = 15,844,711,120.36/145,811.36 - Step 6: Final answer
x = 108,665.82
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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.