Finding the Fourth Proportional to 129,030,572.80, 193,545,859.20 and 115,892,243.20
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Solution
The fourth proportional to 129,030,572.80, 193,545,859.20 and 115,892,243.20 is: 173,838,364.80
Step by Step Solution
- Step 1: Write the proportion equation
129,030,572.80 : 193,545,859.20 = 115,892,243.20 : x - Step 2: Convert to fraction form
129,030,572.80/193,545,859.20 = 115,892,243.20/x - Step 3: Cross multiply
129,030,572.80x = 193,545,859.20 × 115,892,243.20 - Step 4: Simplify right side
129,030,572.80x = 22,430,463,784,759,356 - Step 5: Solve for x
x = 22,430,463,784,759,356/129,030,572.80 - Step 6: Final answer
x = 173,838,364.80
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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.