Finding the Fourth Proportional to 192,009.70, 288,014.55 and 81,201.70
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Solution
The fourth proportional to 192,009.70, 288,014.55 and 81,201.70 is: 121,802.55
Step by Step Solution
- Step 1: Write the proportion equation
192,009.70 : 288,014.55 = 81,201.70 : x - Step 2: Convert to fraction form
192,009.70/288,014.55 = 81,201.70/x - Step 3: Cross multiply
192,009.70x = 288,014.55 × 81,201.70 - Step 4: Simplify right side
192,009.70x = 23,387,271,084.74 - Step 5: Solve for x
x = 23,387,271,084.74/192,009.70 - Step 6: Final answer
x = 121,802.55
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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.