Finding the Fourth Proportional to 128,257.66, 176,995.20 and 71,669.08
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Solution
The fourth proportional to 128,257.66, 176,995.20 and 71,669.08 is: 98,903.12
Step by Step Solution
- Step 1: Write the proportion equation
128,257.66 : 176,995.20 = 71,669.08 : x - Step 2: Convert to fraction form
128,257.66/176,995.20 = 71,669.08/x - Step 3: Cross multiply
128,257.66x = 176,995.20 × 71,669.08 - Step 4: Simplify right side
128,257.66x = 12,685,083,148.42 - Step 5: Solve for x
x = 12,685,083,148.42/128,257.66 - Step 6: Final answer
x = 98,903.12
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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.