Finding the Fourth Proportional to 99,403,543.80, 149,016,669.30 and 38,805,175.80
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Solution
The fourth proportional to 99,403,543.80, 149,016,669.30 and 38,805,175.80 is: 58,173,157.90
Step by Step Solution
- Step 1: Write the proportion equation
99,403,543.80 : 149,016,669.30 = 38,805,175.80 : x - Step 2: Convert to fraction form
99,403,543.80/149,016,669.30 = 38,805,175.80/x - Step 3: Cross multiply
99,403,543.80x = 149,016,669.30 × 38,805,175.80 - Step 4: Simplify right side
99,403,543.80x = 5,782,618,049,316,963 - Step 5: Solve for x
x = 5,782,618,049,316,963/99,403,543.80 - Step 6: Final answer
x = 58,173,157.90
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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.