Finding the Fourth Proportional to 138,300,340.85, 190,865,349.99 and 78,764,154.34
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Solution
The fourth proportional to 138,300,340.85, 190,865,349.99 and 78,764,154.34 is: 108,700,729.09
Step by Step Solution
- Step 1: Write the proportion equation
138,300,340.85 : 190,865,349.99 = 78,764,154.34 : x - Step 2: Convert to fraction form
138,300,340.85/190,865,349.99 = 78,764,154.34/x - Step 3: Cross multiply
138,300,340.85x = 190,865,349.99 × 78,764,154.34 - Step 4: Simplify right side
138,300,340.85x = 15,033,347,883,422,330 - Step 5: Solve for x
x = 15,033,347,883,422,330/138,300,340.85 - Step 6: Final answer
x = 108,700,729.09
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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.