Finding the Fourth Proportional to 189,389,931.29, 261,283,742.12 and 109,991,476.79
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Solution
The fourth proportional to 189,389,931.29, 261,283,742.12 and 109,991,476.79 is: 151,745,050.33
Step by Step Solution
- Step 1: Write the proportion equation
189,389,931.29 : 261,283,742.12 = 109,991,476.79 : x - Step 2: Convert to fraction form
189,389,931.29/261,283,742.12 = 109,991,476.79/x - Step 3: Cross multiply
189,389,931.29x = 261,283,742.12 × 109,991,476.79 - Step 4: Simplify right side
189,389,931.29x = 28,738,984,656,446,372 - Step 5: Solve for x
x = 28,738,984,656,446,372/189,389,931.29 - Step 6: Final answer
x = 151,745,050.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.