Finding the Fourth Proportional to 121,115,637.60, 181,715,446.80 and 53,007,208.80
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Solution
The fourth proportional to 121,115,637.60, 181,715,446.80 and 53,007,208.80 is: 79,529,190.63
Step by Step Solution
- Step 1: Write the proportion equation
121,115,637.60 : 181,715,446.80 = 53,007,208.80 : x - Step 2: Convert to fraction form
121,115,637.60/181,715,446.80 = 53,007,208.80/x - Step 3: Cross multiply
121,115,637.60x = 181,715,446.80 × 53,007,208.80 - Step 4: Simplify right side
121,115,637.60x = 9,632,228,630,712,892 - Step 5: Solve for x
x = 9,632,228,630,712,892/121,115,637.60 - Step 6: Final answer
x = 79,529,190.63
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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.