Finding the Fourth Proportional to 134,910,643.80, 186,177,972.13 and 79,157,012.82
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Solution
The fourth proportional to 134,910,643.80, 186,177,972.13 and 79,157,012.82 is: 109,237,430.88
Step by Step Solution
- Step 1: Write the proportion equation
134,910,643.80 : 186,177,972.13 = 79,157,012.82 : x - Step 2: Convert to fraction form
134,910,643.80/186,177,972.13 = 79,157,012.82/x - Step 3: Cross multiply
134,910,643.80x = 186,177,972.13 × 79,157,012.82 - Step 4: Simplify right side
134,910,643.80x = 14,737,292,127,292,860 - Step 5: Solve for x
x = 14,737,292,127,292,860/134,910,643.80 - Step 6: Final answer
x = 109,237,430.88
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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.