Finding the Fourth Proportional to 129,390.72, 193,726.16 and 66,074.08
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Solution
The fourth proportional to 129,390.72, 193,726.16 and 66,074.08 is: 98,927.32
Step by Step Solution
- Step 1: Write the proportion equation
129,390.72 : 193,726.16 = 66,074.08 : x - Step 2: Convert to fraction form
129,390.72/193,726.16 = 66,074.08/x - Step 3: Cross multiply
129,390.72x = 193,726.16 × 66,074.08 - Step 4: Simplify right side
129,390.72x = 12,800,277,793.93 - Step 5: Solve for x
x = 12,800,277,793.93/129,390.72 - Step 6: Final answer
x = 98,927.32
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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.