Finding the Fourth Proportional to 112,505.76, 168,675.32 and 68,122.08
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Solution
The fourth proportional to 112,505.76, 168,675.32 and 68,122.08 is: 102,132.67
Step by Step Solution
- Step 1: Write the proportion equation
112,505.76 : 168,675.32 = 68,122.08 : x - Step 2: Convert to fraction form
112,505.76/168,675.32 = 68,122.08/x - Step 3: Cross multiply
112,505.76x = 168,675.32 × 68,122.08 - Step 4: Simplify right side
112,505.76x = 11,490,513,643.07 - Step 5: Solve for x
x = 11,490,513,643.07/112,505.76 - Step 6: Final answer
x = 102,132.67
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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.