Finding the Fourth Proportional to 125,142.99, 172,721.34 and 97,865.03
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Solution
The fourth proportional to 125,142.99, 172,721.34 and 97,865.03 is: 135,072.51
Step by Step Solution
- Step 1: Write the proportion equation
125,142.99 : 172,721.34 = 97,865.03 : x - Step 2: Convert to fraction form
125,142.99/172,721.34 = 97,865.03/x - Step 3: Cross multiply
125,142.99x = 172,721.34 × 97,865.03 - Step 4: Simplify right side
125,142.99x = 16,903,378,257.13 - Step 5: Solve for x
x = 16,903,378,257.13/125,142.99 - Step 6: Final answer
x = 135,072.51
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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.