Finding the Fourth Proportional to 172,455,279.20, 258,682,918.80 and 118,035,720.80
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Solution
The fourth proportional to 172,455,279.20, 258,682,918.80 and 118,035,720.80 is: 177,053,581.20
Step by Step Solution
- Step 1: Write the proportion equation
172,455,279.20 : 258,682,918.80 = 118,035,720.80 : x - Step 2: Convert to fraction form
172,455,279.20/258,682,918.80 = 118,035,720.80/x - Step 3: Cross multiply
172,455,279.20x = 258,682,918.80 × 118,035,720.80 - Step 4: Simplify right side
172,455,279.20x = 30,533,824,779,205,872 - Step 5: Solve for x
x = 30,533,824,779,205,872/172,455,279.20 - Step 6: Final answer
x = 177,053,581.20
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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.