Finding the Fourth Proportional to 113,216.06, 156,073.49 and 79,118.68
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Solution
The fourth proportional to 113,216.06, 156,073.49 and 79,118.68 is: 109,068.70
Step by Step Solution
- Step 1: Write the proportion equation
113,216.06 : 156,073.49 = 79,118.68 : x - Step 2: Convert to fraction form
113,216.06/156,073.49 = 79,118.68/x - Step 3: Cross multiply
113,216.06x = 156,073.49 × 79,118.68 - Step 4: Simplify right side
113,216.06x = 12,348,328,319.41 - Step 5: Solve for x
x = 12,348,328,319.41/113,216.06 - Step 6: Final answer
x = 109,068.70
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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.