Finding the Fourth Proportional to 118,749.80, 178,124.70 and 107,085.80
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Solution
The fourth proportional to 118,749.80, 178,124.70 and 107,085.80 is: 160,628.70
Step by Step Solution
- Step 1: Write the proportion equation
118,749.80 : 178,124.70 = 107,085.80 : x - Step 2: Convert to fraction form
118,749.80/178,124.70 = 107,085.80/x - Step 3: Cross multiply
118,749.80x = 178,124.70 × 107,085.80 - Step 4: Simplify right side
118,749.80x = 19,074,625,999.26 - Step 5: Solve for x
x = 19,074,625,999.26/118,749.80 - Step 6: Final answer
x = 160,628.70
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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.