Finding the Fourth Proportional to 128,382,984.60, 177,168,518.74 and 73,380,022.08
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Solution
The fourth proportional to 128,382,984.60, 177,168,518.74 and 73,380,022.08 is: 101,264,430.47
Step by Step Solution
- Step 1: Write the proportion equation
128,382,984.60 : 177,168,518.74 = 73,380,022.08 : x - Step 2: Convert to fraction form
128,382,984.60/177,168,518.74 = 73,380,022.08/x - Step 3: Cross multiply
128,382,984.60x = 177,168,518.74 × 73,380,022.08 - Step 4: Simplify right side
128,382,984.60x = 13,000,629,817,022,094 - Step 5: Solve for x
x = 13,000,629,817,022,094/128,382,984.60 - Step 6: Final answer
x = 101,264,430.47
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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.