Finding the Fourth Proportional to 129,346,735.20, 194,020,102.80 and 83,430,232.80
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Solution
The fourth proportional to 129,346,735.20, 194,020,102.80 and 83,430,232.80 is: 125,145,349.20
Step by Step Solution
- Step 1: Write the proportion equation
129,346,735.20 : 194,020,102.80 = 83,430,232.80 : x - Step 2: Convert to fraction form
129,346,735.20/194,020,102.80 = 83,430,232.80/x - Step 3: Cross multiply
129,346,735.20x = 194,020,102.80 × 83,430,232.80 - Step 4: Simplify right side
129,346,735.20x = 16,187,142,344,483,932 - Step 5: Solve for x
x = 16,187,142,344,483,932/129,346,735.20 - Step 6: Final answer
x = 125,145,349.20
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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.