Finding the Fourth Proportional to 127,866.53, 176,421.19 and 72,675.09
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Solution
The fourth proportional to 127,866.53, 176,421.19 and 72,675.09 is: 100,271.94
Step by Step Solution
- Step 1: Write the proportion equation
127,866.53 : 176,421.19 = 72,675.09 : x - Step 2: Convert to fraction form
127,866.53/176,421.19 = 72,675.09/x - Step 3: Cross multiply
127,866.53x = 176,421.19 × 72,675.09 - Step 4: Simplify right side
127,866.53x = 12,821,424,979.05 - Step 5: Solve for x
x = 12,821,424,979.05/127,866.53 - Step 6: Final answer
x = 100,271.94
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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.