Finding the Fourth Proportional to 145,804.75, 201,210.56 and 78,736.75
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Solution
The fourth proportional to 145,804.75, 201,210.56 and 78,736.75 is: 108,656.72
Step by Step Solution
- Step 1: Write the proportion equation
145,804.75 : 201,210.56 = 78,736.75 : x - Step 2: Convert to fraction form
145,804.75/201,210.56 = 78,736.75/x - Step 3: Cross multiply
145,804.75x = 201,210.56 × 78,736.75 - Step 4: Simplify right side
145,804.75x = 15,842,665,560.08 - Step 5: Solve for x
x = 15,842,665,560.08/145,804.75 - Step 6: Final answer
x = 108,656.72
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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.