Finding the Fourth Proportional to 135,115.09, 186,438.85 and 76,972.34
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Solution
The fourth proportional to 135,115.09, 186,438.85 and 76,972.34 is: 106,210.45
Step by Step Solution
- Step 1: Write the proportion equation
135,115.09 : 186,438.85 = 76,972.34 : x - Step 2: Convert to fraction form
135,115.09/186,438.85 = 76,972.34/x - Step 3: Cross multiply
135,115.09x = 186,438.85 × 76,972.34 - Step 4: Simplify right side
135,115.09x = 14,350,634,825.08 - Step 5: Solve for x
x = 14,350,634,825.08/135,115.09 - Step 6: Final answer
x = 106,210.45
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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.