Finding the Fourth Proportional to 115,909.30, 173,863.95 and 68,475.70
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Solution
The fourth proportional to 115,909.30, 173,863.95 and 68,475.70 is: 102,713.55
Step by Step Solution
- Step 1: Write the proportion equation
115,909.30 : 173,863.95 = 68,475.70 : x - Step 2: Convert to fraction form
115,909.30/173,863.95 = 68,475.70/x - Step 3: Cross multiply
115,909.30x = 173,863.95 × 68,475.70 - Step 4: Simplify right side
115,909.30x = 11,905,455,681.02 - Step 5: Solve for x
x = 11,905,455,681.02/115,909.30 - Step 6: Final answer
x = 102,713.55
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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.