Finding the Fourth Proportional to 117,117.19, 161,621.73 and 63,402.65
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Solution
The fourth proportional to 117,117.19, 161,621.73 and 63,402.65 is: 87,495.66
Step by Step Solution
- Step 1: Write the proportion equation
117,117.19 : 161,621.73 = 63,402.65 : x - Step 2: Convert to fraction form
117,117.19/161,621.73 = 63,402.65/x - Step 3: Cross multiply
117,117.19x = 161,621.73 × 63,402.65 - Step 4: Simplify right side
117,117.19x = 10,247,245,777.56 - Step 5: Solve for x
x = 10,247,245,777.56/117,117.19 - Step 6: Final answer
x = 87,495.66
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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.