Finding the Fourth Proportional to 153,323.05, 211,584.14 and 85,338.94
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Solution
The fourth proportional to 153,323.05, 211,584.14 and 85,338.94 is: 117,766.81
Step by Step Solution
- Step 1: Write the proportion equation
153,323.05 : 211,584.14 = 85,338.94 : x - Step 2: Convert to fraction form
153,323.05/211,584.14 = 85,338.94/x - Step 3: Cross multiply
153,323.05x = 211,584.14 × 85,338.94 - Step 4: Simplify right side
153,323.05x = 18,056,366,228.41 - Step 5: Solve for x
x = 18,056,366,228.41/153,323.05 - Step 6: Final answer
x = 117,766.81
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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.