Finding the Fourth Proportional to 139,053.24, 191,893.95 and 75,391.11
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Solution
The fourth proportional to 139,053.24, 191,893.95 and 75,391.11 is: 104,039.99
Step by Step Solution
- Step 1: Write the proportion equation
139,053.24 : 191,893.95 = 75,391.11 : x - Step 2: Convert to fraction form
139,053.24/191,893.95 = 75,391.11/x - Step 3: Cross multiply
139,053.24x = 191,893.95 × 75,391.11 - Step 4: Simplify right side
139,053.24x = 14,467,097,892.78 - Step 5: Solve for x
x = 14,467,097,892.78/139,053.24 - Step 6: Final answer
x = 104,039.99
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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.