Finding the Fourth Proportional to 128,052.15, 176,760.39 and 96,312.70
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Solution
The fourth proportional to 128,052.15, 176,760.39 and 96,312.70 is: 132,947.95
Step by Step Solution
- Step 1: Write the proportion equation
128,052.15 : 176,760.39 = 96,312.70 : x - Step 2: Convert to fraction form
128,052.15/176,760.39 = 96,312.70/x - Step 3: Cross multiply
128,052.15x = 176,760.39 × 96,312.70 - Step 4: Simplify right side
128,052.15x = 17,024,270,413.95 - Step 5: Solve for x
x = 17,024,270,413.95/128,052.15 - Step 6: Final answer
x = 132,947.95
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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.