Finding the Fourth Proportional to 121,149.60, 181,702.80 and 76,696.80
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Solution
The fourth proportional to 121,149.60, 181,702.80 and 76,696.80 is: 115,031.53
Step by Step Solution
- Step 1: Write the proportion equation
121,149.60 : 181,702.80 = 76,696.80 : x - Step 2: Convert to fraction form
121,149.60/181,702.80 = 76,696.80/x - Step 3: Cross multiply
121,149.60x = 181,702.80 × 76,696.80 - Step 4: Simplify right side
121,149.60x = 13,936,023,311.04 - Step 5: Solve for x
x = 13,936,023,311.04/121,149.60 - Step 6: Final answer
x = 115,031.53
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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.