Finding the Fourth Proportional to 124,878.05, 172,398.40 and 84,100.62
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Solution
The fourth proportional to 124,878.05, 172,398.40 and 84,100.62 is: 116,103.77
Step by Step Solution
- Step 1: Write the proportion equation
124,878.05 : 172,398.40 = 84,100.62 : x - Step 2: Convert to fraction form
124,878.05/172,398.40 = 84,100.62/x - Step 3: Cross multiply
124,878.05x = 172,398.40 × 84,100.62 - Step 4: Simplify right side
124,878.05x = 14,498,812,116.76 - Step 5: Solve for x
x = 14,498,812,116.76/124,878.05 - Step 6: Final answer
x = 116,103.77
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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.