Finding the Fourth Proportional to 128,863.08, 193,350.30 and 69,740.76
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Solution
The fourth proportional to 128,863.08, 193,350.30 and 69,740.76 is: 104,641.27
Step by Step Solution
- Step 1: Write the proportion equation
128,863.08 : 193,350.30 = 69,740.76 : x - Step 2: Convert to fraction form
128,863.08/193,350.30 = 69,740.76/x - Step 3: Cross multiply
128,863.08x = 193,350.30 × 69,740.76 - Step 4: Simplify right side
128,863.08x = 13,484,396,868.23 - Step 5: Solve for x
x = 13,484,396,868.23/128,863.08 - Step 6: Final answer
x = 104,641.27
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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.