Finding the Fourth Proportional to 128,167.29, 176,867.19 and 70,805.70
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Solution
The fourth proportional to 128,167.29, 176,867.19 and 70,805.70 is: 97,709.84
Step by Step Solution
- Step 1: Write the proportion equation
128,167.29 : 176,867.19 = 70,805.70 : x - Step 2: Convert to fraction form
128,167.29/176,867.19 = 70,805.70/x - Step 3: Cross multiply
128,167.29x = 176,867.19 × 70,805.70 - Step 4: Simplify right side
128,167.29x = 12,523,205,194.98 - Step 5: Solve for x
x = 12,523,205,194.98/128,167.29 - Step 6: Final answer
x = 97,709.84
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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.