Finding the Fourth Proportional to 145,921.02, 201,370.50 and 78,853.02
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Solution
The fourth proportional to 145,921.02, 201,370.50 and 78,853.02 is: 108,816.89
Step by Step Solution
- Step 1: Write the proportion equation
145,921.02 : 201,370.50 = 78,853.02 : x - Step 2: Convert to fraction form
145,921.02/201,370.50 = 78,853.02/x - Step 3: Cross multiply
145,921.02x = 201,370.50 × 78,853.02 - Step 4: Simplify right side
145,921.02x = 15,878,672,063.91 - Step 5: Solve for x
x = 15,878,672,063.91/145,921.02 - Step 6: Final answer
x = 108,816.89
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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.