Finding the Fourth Proportional to 122,749.02, 169,302.96 and 74,963.07
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Solution
The fourth proportional to 122,749.02, 169,302.96 and 74,963.07 is: 103,393.65
Step by Step Solution
- Step 1: Write the proportion equation
122,749.02 : 169,302.96 = 74,963.07 : x - Step 2: Convert to fraction form
122,749.02/169,302.96 = 74,963.07/x - Step 3: Cross multiply
122,749.02x = 169,302.96 × 74,963.07 - Step 4: Simplify right side
122,749.02x = 12,691,469,641.69 - Step 5: Solve for x
x = 12,691,469,641.69/122,749.02 - Step 6: Final answer
x = 103,393.65
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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.