Finding the Fourth Proportional to 149,893.97, 206,865.47 and 85,365.95
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Solution
The fourth proportional to 149,893.97, 206,865.47 and 85,365.95 is: 117,811.72
Step by Step Solution
- Step 1: Write the proportion equation
149,893.97 : 206,865.47 = 85,365.95 : x - Step 2: Convert to fraction form
149,893.97/206,865.47 = 85,365.95/x - Step 3: Cross multiply
149,893.97x = 206,865.47 × 85,365.95 - Step 4: Simplify right side
149,893.97x = 17,659,266,547.83 - Step 5: Solve for x
x = 17,659,266,547.83/149,893.97 - Step 6: Final answer
x = 117,811.72
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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.