Finding the Fourth Proportional to 128,613.64, 177,565.64 and 101,864.20
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Solution
The fourth proportional to 128,613.64, 177,565.64 and 101,864.20 is: 140,635.02
Step by Step Solution
- Step 1: Write the proportion equation
128,613.64 : 177,565.64 = 101,864.20 : x - Step 2: Convert to fraction form
128,613.64/177,565.64 = 101,864.20/x - Step 3: Cross multiply
128,613.64x = 177,565.64 × 101,864.20 - Step 4: Simplify right side
128,613.64x = 18,087,581,866.09 - Step 5: Solve for x
x = 18,087,581,866.09/128,613.64 - Step 6: Final answer
x = 140,635.02
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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.