Finding the Fourth Proportional to 134,431.80, 201,647.70 and 128,526.90
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Solution
The fourth proportional to 134,431.80, 201,647.70 and 128,526.90 is: 192,790.35
Step by Step Solution
- Step 1: Write the proportion equation
134,431.80 : 201,647.70 = 128,526.90 : x - Step 2: Convert to fraction form
134,431.80/201,647.70 = 128,526.90/x - Step 3: Cross multiply
134,431.80x = 201,647.70 × 128,526.90 - Step 4: Simplify right side
134,431.80x = 25,917,153,773.13 - Step 5: Solve for x
x = 25,917,153,773.13/134,431.80 - Step 6: Final answer
x = 192,790.35
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1.5x scale
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.