Finding the Fourth Proportional to 140,950.19, 194,511.12 and 77,289.05
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Solution
The fourth proportional to 140,950.19, 194,511.12 and 77,289.05 is: 106,658.81
Step by Step Solution
- Step 1: Write the proportion equation
140,950.19 : 194,511.12 = 77,289.05 : x - Step 2: Convert to fraction form
140,950.19/194,511.12 = 77,289.05/x - Step 3: Cross multiply
140,950.19x = 194,511.12 × 77,289.05 - Step 4: Simplify right side
140,950.19x = 15,033,579,679.24 - Step 5: Solve for x
x = 15,033,579,679.24/140,950.19 - Step 6: Final answer
x = 106,658.81
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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.