Finding the Fourth Proportional to 194,318,905.80, 291,436,368.30 and 85,143,865.80
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Solution
The fourth proportional to 194,318,905.80, 291,436,368.30 and 85,143,865.80 is: 127,697,399.95
Step by Step Solution
- Step 1: Write the proportion equation
194,318,905.80 : 291,436,368.30 = 85,143,865.80 : x - Step 2: Convert to fraction form
194,318,905.80/291,436,368.30 = 85,143,865.80/x - Step 3: Cross multiply
194,318,905.80x = 291,436,368.30 × 85,143,865.80 - Step 4: Simplify right side
194,318,905.80x = 24,814,019,031,774,576 - Step 5: Solve for x
x = 24,814,019,031,774,576/194,318,905.80 - Step 6: Final answer
x = 127,697,399.95
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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.