Finding the Fourth Proportional to 124,866.90, 172,296.99 and 71,154.18
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Solution
The fourth proportional to 124,866.90, 172,296.99 and 71,154.18 is: 98,181.75
Step by Step Solution
- Step 1: Write the proportion equation
124,866.90 : 172,296.99 = 71,154.18 : x - Step 2: Convert to fraction form
124,866.90/172,296.99 = 71,154.18/x - Step 3: Cross multiply
124,866.90x = 172,296.99 × 71,154.18 - Step 4: Simplify right side
124,866.90x = 12,259,651,039.92 - Step 5: Solve for x
x = 12,259,651,039.92/124,866.90 - Step 6: Final answer
x = 98,181.75
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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.