Finding the Fourth Proportional to 128,834.74, 193,265.07 and 47,803.96
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Solution
The fourth proportional to 128,834.74, 193,265.07 and 47,803.96 is: 71,710.75
Step by Step Solution
- Step 1: Write the proportion equation
128,834.74 : 193,265.07 = 47,803.96 : x - Step 2: Convert to fraction form
128,834.74/193,265.07 = 47,803.96/x - Step 3: Cross multiply
128,834.74x = 193,265.07 × 47,803.96 - Step 4: Simplify right side
128,834.74x = 9,238,835,675.68 - Step 5: Solve for x
x = 9,238,835,675.68/128,834.74 - Step 6: Final answer
x = 71,710.75
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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.