Finding the Fourth Proportional to 106,900.84, 147,425.70 and 91,788.76
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Solution
The fourth proportional to 106,900.84, 147,425.70 and 91,788.76 is: 126,584.81
Step by Step Solution
- Step 1: Write the proportion equation
106,900.84 : 147,425.70 = 91,788.76 : x - Step 2: Convert to fraction form
106,900.84/147,425.70 = 91,788.76/x - Step 3: Cross multiply
106,900.84x = 147,425.70 × 91,788.76 - Step 4: Simplify right side
106,900.84x = 13,532,022,195.13 - Step 5: Solve for x
x = 13,532,022,195.13/106,900.84 - Step 6: Final answer
x = 126,584.81
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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.