Finding the Fourth Proportional to 100,319,643.99, 138,441,599.07 and 56,268,997.05
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Solution
The fourth proportional to 100,319,643.99, 138,441,599.07 and 56,268,997.05 is: 77,651,490.97
Step by Step Solution
- Step 1: Write the proportion equation
100,319,643.99 : 138,441,599.07 = 56,268,997.05 : x - Step 2: Convert to fraction form
100,319,643.99/138,441,599.07 = 56,268,997.05/x - Step 3: Cross multiply
100,319,643.99x = 138,441,599.07 × 56,268,997.05 - Step 4: Simplify right side
100,319,643.99x = 7,789,969,929,667,112 - Step 5: Solve for x
x = 7,789,969,929,667,112/100,319,643.99 - Step 6: Final answer
x = 77,651,490.97
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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.