Finding the Fourth Proportional to 213,135,251.77, 319,830,421.65 and 91,966,703.77
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Solution
The fourth proportional to 213,135,251.77, 319,830,421.65 and 91,966,703.77 is: 138,005,090.20
Step by Step Solution
- Step 1: Write the proportion equation
213,135,251.77 : 319,830,421.65 = 91,966,703.77 : x - Step 2: Convert to fraction form
213,135,251.77/319,830,421.65 = 91,966,703.77/x - Step 3: Cross multiply
213,135,251.77x = 319,830,421.65 × 91,966,703.77 - Step 4: Simplify right side
213,135,251.77x = 29,413,749,644,519,740 - Step 5: Solve for x
x = 29,413,749,644,519,740/213,135,251.77 - Step 6: Final answer
x = 138,005,090.20
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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.