Finding the Fourth Proportional to 145,969.13, 201,437.42 and 78,901.13
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Solution
The fourth proportional to 145,969.13, 201,437.42 and 78,901.13 is: 108,883.56
Step by Step Solution
- Step 1: Write the proportion equation
145,969.13 : 201,437.42 = 78,901.13 : x - Step 2: Convert to fraction form
145,969.13/201,437.42 = 78,901.13/x - Step 3: Cross multiply
145,969.13x = 201,437.42 × 78,901.13 - Step 4: Simplify right side
145,969.13x = 15,893,638,660.59 - Step 5: Solve for x
x = 15,893,638,660.59/145,969.13 - Step 6: Final answer
x = 108,883.56
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1.5x scale
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.