Finding the Fourth Proportional to 99,855,058.60, 149,782,587.90 and 81,715,205.80
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Solution
The fourth proportional to 99,855,058.60, 149,782,587.90 and 81,715,205.80 is: 122,572,808.70
Step by Step Solution
- Step 1: Write the proportion equation
99,855,058.60 : 149,782,587.90 = 81,715,205.80 : x - Step 2: Convert to fraction form
99,855,058.60/149,782,587.90 = 81,715,205.80/x - Step 3: Cross multiply
99,855,058.60x = 149,782,587.90 × 81,715,205.80 - Step 4: Simplify right side
99,855,058.60x = 12,239,514,995,505,090 - Step 5: Solve for x
x = 12,239,514,995,505,090/99,855,058.60 - Step 6: Final answer
x = 122,572,808.70
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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.