Finding the Fourth Proportional to 120,372,582.78, 180,501,965.70 and 46,630,903.98
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Solution
The fourth proportional to 120,372,582.78, 180,501,965.70 and 46,630,903.98 is: 69,924,310.31
Step by Step Solution
- Step 1: Write the proportion equation
120,372,582.78 : 180,501,965.70 = 46,630,903.98 : x - Step 2: Convert to fraction form
120,372,582.78/180,501,965.70 = 46,630,903.98/x - Step 3: Cross multiply
120,372,582.78x = 180,501,965.70 × 46,630,903.98 - Step 4: Simplify right side
120,372,582.78x = 8,416,969,830,757,952 - Step 5: Solve for x
x = 8,416,969,830,757,952/120,372,582.78 - Step 6: Final answer
x = 69,924,310.31
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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.