Finding the Fourth Proportional to 110,726.20, 166,089.30 and 81,201.70
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Solution
The fourth proportional to 110,726.20, 166,089.30 and 81,201.70 is: 121,802.55
Step by Step Solution
- Step 1: Write the proportion equation
110,726.20 : 166,089.30 = 81,201.70 : x - Step 2: Convert to fraction form
110,726.20/166,089.30 = 81,201.70/x - Step 3: Cross multiply
110,726.20x = 166,089.30 × 81,201.70 - Step 4: Simplify right side
110,726.20x = 13,486,733,511.81 - Step 5: Solve for x
x = 13,486,733,511.81/110,726.20 - Step 6: Final answer
x = 121,802.55
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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.