Finding the Fourth Proportional to 124,156.80, 171,217.28 and 83,412.99
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Solution
The fourth proportional to 124,156.80, 171,217.28 and 83,412.99 is: 115,029.90
Step by Step Solution
- Step 1: Write the proportion equation
124,156.80 : 171,217.28 = 83,412.99 : x - Step 2: Convert to fraction form
124,156.80/171,217.28 = 83,412.99/x - Step 3: Cross multiply
124,156.80x = 171,217.28 × 83,412.99 - Step 4: Simplify right side
124,156.80x = 14,281,744,847.40 - Step 5: Solve for x
x = 14,281,744,847.40/124,156.80 - Step 6: Final answer
x = 115,029.90
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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.