Finding the Fourth Proportional to 120,124.14, 165,787.80 and 69,135.84
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Solution
The fourth proportional to 120,124.14, 165,787.80 and 69,135.84 is: 95,416.95
Step by Step Solution
- Step 1: Write the proportion equation
120,124.14 : 165,787.80 = 69,135.84 : x - Step 2: Convert to fraction form
120,124.14/165,787.80 = 69,135.84/x - Step 3: Cross multiply
120,124.14x = 165,787.80 × 69,135.84 - Step 4: Simplify right side
120,124.14x = 11,461,878,814.75 - Step 5: Solve for x
x = 11,461,878,814.75/120,124.14 - Step 6: Final answer
x = 95,416.95
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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.