Finding the Fourth Proportional to 185,985.36, 278,756.57 and 129,519.74
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Solution
The fourth proportional to 185,985.36, 278,756.57 and 129,519.74 is: 194,125.37
Step by Step Solution
- Step 1: Write the proportion equation
185,985.36 : 278,756.57 = 129,519.74 : x - Step 2: Convert to fraction form
185,985.36/278,756.57 = 129,519.74/x - Step 3: Cross multiply
185,985.36x = 278,756.57 × 129,519.74 - Step 4: Simplify right side
185,985.36x = 36,104,476,428.31 - Step 5: Solve for x
x = 36,104,476,428.31/185,985.36 - Step 6: Final answer
x = 194,125.37
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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.