Finding the Fourth Proportional to 157,220.70, 235,831.05 and 74,276.70
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Solution
The fourth proportional to 157,220.70, 235,831.05 and 74,276.70 is: 111,415.05
Step by Step Solution
- Step 1: Write the proportion equation
157,220.70 : 235,831.05 = 74,276.70 : x - Step 2: Convert to fraction form
157,220.70/235,831.05 = 74,276.70/x - Step 3: Cross multiply
157,220.70x = 235,831.05 × 74,276.70 - Step 4: Simplify right side
157,220.70x = 17,516,752,151.54 - Step 5: Solve for x
x = 17,516,752,151.54/157,220.70 - Step 6: Final answer
x = 111,415.05
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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.