Finding the Fourth Proportional to 120,372,979.86, 180,502,551.34 and 46,631,298.42
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Solution
The fourth proportional to 120,372,979.86, 180,502,551.34 and 46,631,298.42 is: 69,924,897.99
Step by Step Solution
- Step 1: Write the proportion equation
120,372,979.86 : 180,502,551.34 = 46,631,298.42 : x - Step 2: Convert to fraction form
120,372,979.86/180,502,551.34 = 46,631,298.42/x - Step 3: Cross multiply
120,372,979.86x = 180,502,551.34 × 46,631,298.42 - Step 4: Simplify right side
120,372,979.86x = 8,417,068,336,990,333 - Step 5: Solve for x
x = 8,417,068,336,990,333/120,372,979.86 - Step 6: Final answer
x = 69,924,897.99
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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.