Finding the Fourth Proportional to 120,550,809.60, 180,868,204.80 and 52,442,380.80
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Solution
The fourth proportional to 120,550,809.60, 180,868,204.80 and 52,442,380.80 is: 78,681,837.99
Step by Step Solution
- Step 1: Write the proportion equation
120,550,809.60 : 180,868,204.80 = 52,442,380.80 : x - Step 2: Convert to fraction form
120,550,809.60/180,868,204.80 = 52,442,380.80/x - Step 3: Cross multiply
120,550,809.60x = 180,868,204.80 × 52,442,380.80 - Step 4: Simplify right side
120,550,809.60x = 9,485,159,270,733,988 - Step 5: Solve for x
x = 9,485,159,270,733,988/120,550,809.60 - Step 6: Final answer
x = 78,681,837.99
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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.