Finding the Fourth Proportional to 107,008,139.20, 160,512,208.80 and 79,758,270.40
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Solution
The fourth proportional to 107,008,139.20, 160,512,208.80 and 79,758,270.40 is: 119,637,405.60
Step by Step Solution
- Step 1: Write the proportion equation
107,008,139.20 : 160,512,208.80 = 79,758,270.40 : x - Step 2: Convert to fraction form
107,008,139.20/160,512,208.80 = 79,758,270.40/x - Step 3: Cross multiply
107,008,139.20x = 160,512,208.80 × 79,758,270.40 - Step 4: Simplify right side
107,008,139.20x = 12,802,176,151,971,662 - Step 5: Solve for x
x = 12,802,176,151,971,662/107,008,139.20 - Step 6: Final answer
x = 119,637,405.60
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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.