Finding the Fourth Proportional to 112,126,686.40, 168,190,029.60 and 84,916,907.20
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Solution
The fourth proportional to 112,126,686.40, 168,190,029.60 and 84,916,907.20 is: 127,375,360.80
Step by Step Solution
- Step 1: Write the proportion equation
112,126,686.40 : 168,190,029.60 = 84,916,907.20 : x - Step 2: Convert to fraction form
112,126,686.40/168,190,029.60 = 84,916,907.20/x - Step 3: Cross multiply
112,126,686.40x = 168,190,029.60 × 84,916,907.20 - Step 4: Simplify right side
112,126,686.40x = 14,282,177,135,508,454 - Step 5: Solve for x
x = 14,282,177,135,508,454/112,126,686.40 - Step 6: Final answer
x = 127,375,360.80
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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.