Finding the Fourth Proportional to 126,138,968.48, 174,045,778.11 and 72,483,263.07
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Solution
The fourth proportional to 126,138,968.48, 174,045,778.11 and 72,483,263.07 is: 100,011,963.58
Step by Step Solution
- Step 1: Write the proportion equation
126,138,968.48 : 174,045,778.11 = 72,483,263.07 : x - Step 2: Convert to fraction form
126,138,968.48/174,045,778.11 = 72,483,263.07/x - Step 3: Cross multiply
126,138,968.48x = 174,045,778.11 × 72,483,263.07 - Step 4: Simplify right side
126,138,968.48x = 12,615,405,920,969,978 - Step 5: Solve for x
x = 12,615,405,920,969,978/126,138,968.48 - Step 6: Final answer
x = 100,011,963.58
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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.