Finding the Fourth Proportional to 100,838,356.10, 151,257,534.15 and 66,400,979.30
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Solution
The fourth proportional to 100,838,356.10, 151,257,534.15 and 66,400,979.30 is: 99,601,468.95
Step by Step Solution
- Step 1: Write the proportion equation
100,838,356.10 : 151,257,534.15 = 66,400,979.30 : x - Step 2: Convert to fraction form
100,838,356.10/151,257,534.15 = 66,400,979.30/x - Step 3: Cross multiply
100,838,356.10x = 151,257,534.15 × 66,400,979.30 - Step 4: Simplify right side
100,838,356.10x = 10,043,648,394,063,194 - Step 5: Solve for x
x = 10,043,648,394,063,194/100,838,356.10 - Step 6: Final answer
x = 99,601,468.95
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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.