Finding the Fourth Proportional to 172,130.05, 258,271.62 and 87,845.70
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Solution
The fourth proportional to 172,130.05, 258,271.62 and 87,845.70 is: 131,807.61
Step by Step Solution
- Step 1: Write the proportion equation
172,130.05 : 258,271.62 = 87,845.70 : x - Step 2: Convert to fraction form
172,130.05/258,271.62 = 87,845.70/x - Step 3: Cross multiply
172,130.05x = 258,271.62 × 87,845.70 - Step 4: Simplify right side
172,130.05x = 22,688,051,249.03 - Step 5: Solve for x
x = 22,688,051,249.03/172,130.05 - Step 6: Final answer
x = 131,807.61
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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.