Finding the Fourth Proportional to 172,101.78, 236,658.21 and 149,401.09
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Solution
The fourth proportional to 172,101.78, 236,658.21 and 149,401.09 is: 205,442.35
Step by Step Solution
- Step 1: Write the proportion equation
172,101.78 : 236,658.21 = 149,401.09 : x - Step 2: Convert to fraction form
172,101.78/236,658.21 = 149,401.09/x - Step 3: Cross multiply
172,101.78x = 236,658.21 × 149,401.09 - Step 4: Simplify right side
172,101.78x = 35,356,994,267.02 - Step 5: Solve for x
x = 35,356,994,267.02/172,101.78 - Step 6: Final answer
x = 205,442.35
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1.5x scale
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.