Finding the Fourth Proportional to 149,243.19, 205,948.71 and 81,259.96
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Solution
The fourth proportional to 149,243.19, 205,948.71 and 81,259.96 is: 112,134.99
Step by Step Solution
- Step 1: Write the proportion equation
149,243.19 : 205,948.71 = 81,259.96 : x - Step 2: Convert to fraction form
149,243.19/205,948.71 = 81,259.96/x - Step 3: Cross multiply
149,243.19x = 205,948.71 × 81,259.96 - Step 4: Simplify right side
149,243.19x = 16,735,383,421.78 - Step 5: Solve for x
x = 16,735,383,421.78/149,243.19 - Step 6: Final answer
x = 112,134.99
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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.