Finding the Fourth Proportional to 103,725.84, 143,129.82 and 58,402.65
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Solution
The fourth proportional to 103,725.84, 143,129.82 and 58,402.65 is: 80,588.99
Step by Step Solution
- Step 1: Write the proportion equation
103,725.84 : 143,129.82 = 58,402.65 : x - Step 2: Convert to fraction form
103,725.84/143,129.82 = 58,402.65/x - Step 3: Cross multiply
103,725.84x = 143,129.82 × 58,402.65 - Step 4: Simplify right side
103,725.84x = 8,359,160,782.02 - Step 5: Solve for x
x = 8,359,160,782.02/103,725.84 - Step 6: Final answer
x = 80,588.99
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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.