Finding the Fourth Proportional to 86,814,244.20, 130,221,366.30 and 66,720,906.60
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Solution
The fourth proportional to 86,814,244.20, 130,221,366.30 and 66,720,906.60 is: 100,081,359.90
Step by Step Solution
- Step 1: Write the proportion equation
86,814,244.20 : 130,221,366.30 = 66,720,906.60 : x - Step 2: Convert to fraction form
86,814,244.20/130,221,366.30 = 66,720,906.60/x - Step 3: Cross multiply
86,814,244.20x = 130,221,366.30 × 66,720,906.60 - Step 4: Simplify right side
86,814,244.20x = 8,688,487,618,226,688 - Step 5: Solve for x
x = 8,688,487,618,226,688/86,814,244.20 - Step 6: Final answer
x = 100,081,359.90
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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.