Finding the Fourth Proportional to 102,989.79, 142,101.41 and 62,703.09
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Solution
The fourth proportional to 102,989.79, 142,101.41 and 62,703.09 is: 86,515.34
Step by Step Solution
- Step 1: Write the proportion equation
102,989.79 : 142,101.41 = 62,703.09 : x - Step 2: Convert to fraction form
102,989.79/142,101.41 = 62,703.09/x - Step 3: Cross multiply
102,989.79x = 142,101.41 × 62,703.09 - Step 4: Simplify right side
102,989.79x = 8,910,197,186.84 - Step 5: Solve for x
x = 8,910,197,186.84/102,989.79 - Step 6: Final answer
x = 86,515.34
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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.