Finding the Fourth Proportional to 129,875.10, 194,764.05 and 45,602.70
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Solution
The fourth proportional to 129,875.10, 194,764.05 and 45,602.70 is: 68,386.99
Step by Step Solution
- Step 1: Write the proportion equation
129,875.10 : 194,764.05 = 45,602.70 : x - Step 2: Convert to fraction form
129,875.10/194,764.05 = 45,602.70/x - Step 3: Cross multiply
129,875.10x = 194,764.05 × 45,602.70 - Step 4: Simplify right side
129,875.10x = 8,881,766,542.94 - Step 5: Solve for x
x = 8,881,766,542.94/129,875.10 - Step 6: Final answer
x = 68,386.99
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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.