Finding the Fourth Proportional to 138,383.17, 207,574.95 and 38,543.65
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Solution
The fourth proportional to 138,383.17, 207,574.95 and 38,543.65 is: 57,815.53
Step by Step Solution
- Step 1: Write the proportion equation
138,383.17 : 207,574.95 = 38,543.65 : x - Step 2: Convert to fraction form
138,383.17/207,574.95 = 38,543.65/x - Step 3: Cross multiply
138,383.17x = 207,574.95 × 38,543.65 - Step 4: Simplify right side
138,383.17x = 8,000,696,221.57 - Step 5: Solve for x
x = 8,000,696,221.57/138,383.17 - Step 6: Final answer
x = 57,815.53
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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.