Finding the Fourth Proportional to 117,666.12, 162,382.80 and 72,370.70
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Solution
The fourth proportional to 117,666.12, 162,382.80 and 72,370.70 is: 99,873.75
Step by Step Solution
- Step 1: Write the proportion equation
117,666.12 : 162,382.80 = 72,370.70 : x - Step 2: Convert to fraction form
117,666.12/162,382.80 = 72,370.70/x - Step 3: Cross multiply
117,666.12x = 162,382.80 × 72,370.70 - Step 4: Simplify right side
117,666.12x = 11,751,756,903.96 - Step 5: Solve for x
x = 11,751,756,903.96/117,666.12 - Step 6: Final answer
x = 99,873.75
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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.