Finding the Fourth Proportional to 189,567,138.24, 261,607,812.48 and 107,073,187.20
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Solution
The fourth proportional to 189,567,138.24, 261,607,812.48 and 107,073,187.20 is: 147,763,913.82
Step by Step Solution
- Step 1: Write the proportion equation
189,567,138.24 : 261,607,812.48 = 107,073,187.20 : x - Step 2: Convert to fraction form
189,567,138.24/261,607,812.48 = 107,073,187.20/x - Step 3: Cross multiply
189,567,138.24x = 261,607,812.48 × 107,073,187.20 - Step 4: Simplify right side
189,567,138.24x = 28,011,182,278,653,536 - Step 5: Solve for x
x = 28,011,182,278,653,536/189,567,138.24 - Step 6: Final answer
x = 147,763,913.82
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1.5x scale
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.