Finding the Fourth Proportional to 99,665,117.10, 149,497,675.65 and 72,791,261.10
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Solution
The fourth proportional to 99,665,117.10, 149,497,675.65 and 72,791,261.10 is: 109,186,891.65
Step by Step Solution
- Step 1: Write the proportion equation
99,665,117.10 : 149,497,675.65 = 72,791,261.10 : x - Step 2: Convert to fraction form
99,665,117.10/149,497,675.65 = 72,791,261.10/x - Step 3: Cross multiply
99,665,117.10x = 149,497,675.65 × 72,791,261.10 - Step 4: Simplify right side
99,665,117.10x = 10,882,124,342,082,262 - Step 5: Solve for x
x = 10,882,124,342,082,262/99,665,117.10 - Step 6: Final answer
x = 109,186,891.65
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Double scale
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Similar ratio
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1.5x scale
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.