Finding the Fourth Proportional to 139,382.73, 192,347.10 and 75,720.99
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Solution
The fourth proportional to 139,382.73, 192,347.10 and 75,720.99 is: 104,494.39
Step by Step Solution
- Step 1: Write the proportion equation
139,382.73 : 192,347.10 = 75,720.99 : x - Step 2: Convert to fraction form
139,382.73/192,347.10 = 75,720.99/x - Step 3: Cross multiply
139,382.73x = 192,347.10 × 75,720.99 - Step 4: Simplify right side
139,382.73x = 14,564,712,835.63 - Step 5: Solve for x
x = 14,564,712,835.63/139,382.73 - Step 6: Final answer
x = 104,494.39
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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.