Finding the Fourth Proportional to 90,006.68, 135,009.57 and 84,525.82
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Solution
The fourth proportional to 90,006.68, 135,009.57 and 84,525.82 is: 126,788.31
Step by Step Solution
- Step 1: Write the proportion equation
90,006.68 : 135,009.57 = 84,525.82 : x - Step 2: Convert to fraction form
90,006.68/135,009.57 = 84,525.82/x - Step 3: Cross multiply
90,006.68x = 135,009.57 × 84,525.82 - Step 4: Simplify right side
90,006.68x = 11,411,794,612.10 - Step 5: Solve for x
x = 11,411,794,612.10/90,006.68 - Step 6: Final answer
x = 126,788.31
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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.