Finding the Fourth Proportional to 129,292,225.80, 193,938,338.70 and 129,292,225.80
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Solution
The fourth proportional to 129,292,225.80, 193,938,338.70 and 129,292,225.80 is: 193,938,338.70
Step by Step Solution
- Step 1: Write the proportion equation
129,292,225.80 : 193,938,338.70 = 129,292,225.80 : x - Step 2: Convert to fraction form
129,292,225.80/193,938,338.70 = 129,292,225.80/x - Step 3: Cross multiply
129,292,225.80x = 193,938,338.70 × 129,292,225.80 - Step 4: Simplify right side
129,292,225.80x = 25,074,719,478,477,276 - Step 5: Solve for x
x = 25,074,719,478,477,276/129,292,225.80 - Step 6: Final answer
x = 193,938,338.70
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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.