Finding the Fourth Proportional to 72,130,190,954.70, 100,775,876,122.50 and 72,130,190,954.70
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Solution
The fourth proportional to 72,130,190,954.70, 100,775,876,122.50 and 72,130,190,954.70 is: 100,775,876,122.50
Step by Step Solution
- Step 1: Write the proportion equation
72,130,190,954.70 : 100,775,876,122.50 = 72,130,190,954.70 : x - Step 2: Convert to fraction form
72,130,190,954.70/100,775,876,122.50 = 72,130,190,954.70/x - Step 3: Cross multiply
72,130,190,954.70x = 100,775,876,122.50 × 72,130,190,954.70 - Step 4: Simplify right side
72,130,190,954.70x = 7,268,983,188,343,117,316,096 - Step 5: Solve for x
x = 7,268,983,188,343,117,316,096/72,130,190,954.70 - Step 6: Final answer
x = 100,775,876,122.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.