Finding the Fourth Proportional to 97,989,965.20, 146,984,947.80 and 68,764,646.80
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Solution
The fourth proportional to 97,989,965.20, 146,984,947.80 and 68,764,646.80 is: 103,146,970.20
Step by Step Solution
- Step 1: Write the proportion equation
97,989,965.20 : 146,984,947.80 = 68,764,646.80 : x - Step 2: Convert to fraction form
97,989,965.20/146,984,947.80 = 68,764,646.80/x - Step 3: Cross multiply
97,989,965.20x = 146,984,947.80 × 68,764,646.80 - Step 4: Simplify right side
97,989,965.20x = 10,107,368,020,383,438 - Step 5: Solve for x
x = 10,107,368,020,383,438/97,989,965.20 - Step 6: Final answer
x = 103,146,970.20
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1.5x scale
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.