Finding the Fourth Proportional to 149,561.55, 206,395.59 and 81,579.99
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Solution
The fourth proportional to 149,561.55, 206,395.59 and 81,579.99 is: 112,580.73
Step by Step Solution
- Step 1: Write the proportion equation
149,561.55 : 206,395.59 = 81,579.99 : x - Step 2: Convert to fraction form
149,561.55/206,395.59 = 81,579.99/x - Step 3: Cross multiply
149,561.55x = 206,395.59 × 81,579.99 - Step 4: Simplify right side
149,561.55x = 16,837,748,818.36 - Step 5: Solve for x
x = 16,837,748,818.36/149,561.55 - Step 6: Final answer
x = 112,580.73
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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.