Finding the Fourth Proportional to 112,511.80, 168,767.70 and 86,267.80
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Solution
The fourth proportional to 112,511.80, 168,767.70 and 86,267.80 is: 129,401.70
Step by Step Solution
- Step 1: Write the proportion equation
112,511.80 : 168,767.70 = 86,267.80 : x - Step 2: Convert to fraction form
112,511.80/168,767.70 = 86,267.80/x - Step 3: Cross multiply
112,511.80x = 168,767.70 × 86,267.80 - Step 4: Simplify right side
112,511.80x = 14,559,218,190.06 - Step 5: Solve for x
x = 14,559,218,190.06/112,511.80 - Step 6: Final answer
x = 129,401.70
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1.5x scale
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.