Finding the Fourth Proportional to 128,624.97, 192,956.14 and 39,885.63
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Solution
The fourth proportional to 128,624.97, 192,956.14 and 39,885.63 is: 59,834.23
Step by Step Solution
- Step 1: Write the proportion equation
128,624.97 : 192,956.14 = 39,885.63 : x - Step 2: Convert to fraction form
128,624.97/192,956.14 = 39,885.63/x - Step 3: Cross multiply
128,624.97x = 192,956.14 × 39,885.63 - Step 4: Simplify right side
128,624.97x = 7,696,176,532.54 - Step 5: Solve for x
x = 7,696,176,532.54/128,624.97 - Step 6: Final answer
x = 59,834.23
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.