Finding the Fourth Proportional to 187,220.10, 280,831.35 and 74,909.70
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Solution
The fourth proportional to 187,220.10, 280,831.35 and 74,909.70 is: 112,365.03
Step by Step Solution
- Step 1: Write the proportion equation
187,220.10 : 280,831.35 = 74,909.70 : x - Step 2: Convert to fraction form
187,220.10/280,831.35 = 74,909.70/x - Step 3: Cross multiply
187,220.10x = 280,831.35 × 74,909.70 - Step 4: Simplify right side
187,220.10x = 21,036,992,179.10 - Step 5: Solve for x
x = 21,036,992,179.10/187,220.10 - Step 6: Final answer
x = 112,365.03
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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.