Finding the Fourth Proportional to 149,242.94, 205,948.36 and 81,259.70
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Solution
The fourth proportional to 149,242.94, 205,948.36 and 81,259.70 is: 112,134.63
Step by Step Solution
- Step 1: Write the proportion equation
149,242.94 : 205,948.36 = 81,259.70 : x - Step 2: Convert to fraction form
149,242.94/205,948.36 = 81,259.70/x - Step 3: Cross multiply
149,242.94x = 205,948.36 × 81,259.70 - Step 4: Simplify right side
149,242.94x = 16,735,301,949.09 - Step 5: Solve for x
x = 16,735,301,949.09/149,242.94 - Step 6: Final answer
x = 112,134.63
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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.