Finding the Fourth Proportional to 135,448,220.48, 186,915,365.08 and 79,697,251.84
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Solution
The fourth proportional to 135,448,220.48, 186,915,365.08 and 79,697,251.84 is: 109,980,336.92
Step by Step Solution
- Step 1: Write the proportion equation
135,448,220.48 : 186,915,365.08 = 79,697,251.84 : x - Step 2: Convert to fraction form
135,448,220.48/186,915,365.08 = 79,697,251.84/x - Step 3: Cross multiply
135,448,220.48x = 186,915,365.08 × 79,697,251.84 - Step 4: Simplify right side
135,448,220.48x = 14,896,640,923,546,304 - Step 5: Solve for x
x = 14,896,640,923,546,304/135,448,220.48 - Step 6: Final answer
x = 109,980,336.92
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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.