Finding the Fourth Proportional to 189,657,693.99, 261,769,722.57 and 115,302,455.01
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Solution
The fourth proportional to 189,657,693.99, 261,769,722.57 and 115,302,455.01 is: 159,142,985.58
Step by Step Solution
- Step 1: Write the proportion equation
189,657,693.99 : 261,769,722.57 = 115,302,455.01 : x - Step 2: Convert to fraction form
189,657,693.99/261,769,722.57 = 115,302,455.01/x - Step 3: Cross multiply
189,657,693.99x = 261,769,722.57 × 115,302,455.01 - Step 4: Simplify right side
189,657,693.99x = 30,182,691,659,607,608 - Step 5: Solve for x
x = 30,182,691,659,607,608/189,657,693.99 - Step 6: Final answer
x = 159,142,985.58
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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.