Finding the Fourth Proportional to 157,457.20, 236,187.60 and 39,128.80
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Solution
The fourth proportional to 157,457.20, 236,187.60 and 39,128.80 is: 58,693.65
Step by Step Solution
- Step 1: Write the proportion equation
157,457.20 : 236,187.60 = 39,128.80 : x - Step 2: Convert to fraction form
157,457.20/236,187.60 = 39,128.80/x - Step 3: Cross multiply
157,457.20x = 236,187.60 × 39,128.80 - Step 4: Simplify right side
157,457.20x = 9,241,737,362.88 - Step 5: Solve for x
x = 9,241,737,362.88/157,457.20 - Step 6: Final answer
x = 58,693.65
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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.