Finding the Fourth Proportional to 141,938.91, 195,869.09 and 81,466.99
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Solution
The fourth proportional to 141,938.91, 195,869.09 and 81,466.99 is: 112,420.65
Step by Step Solution
- Step 1: Write the proportion equation
141,938.91 : 195,869.09 = 81,466.99 : x - Step 2: Convert to fraction form
141,938.91/195,869.09 = 81,466.99/x - Step 3: Cross multiply
141,938.91x = 195,869.09 × 81,466.99 - Step 4: Simplify right side
141,938.91x = 15,956,864,216.99 - Step 5: Solve for x
x = 15,956,864,216.99/141,938.91 - Step 6: Final answer
x = 112,420.65
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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.