Finding the Fourth Proportional to 102,617.73, 153,931.79 and 39,415.70
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Solution
The fourth proportional to 102,617.73, 153,931.79 and 39,415.70 is: 59,125.54
Step by Step Solution
- Step 1: Write the proportion equation
102,617.73 : 153,931.79 = 39,415.70 : x - Step 2: Convert to fraction form
102,617.73/153,931.79 = 39,415.70/x - Step 3: Cross multiply
102,617.73x = 153,931.79 × 39,415.70 - Step 4: Simplify right side
102,617.73x = 6,067,328,673.20 - Step 5: Solve for x
x = 6,067,328,673.20/102,617.73 - Step 6: Final answer
x = 59,125.54
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.